Kevin Rudolf "Let It Rock" (20 Days/Peak: 1[2]) Common f/ Pharrell "UMC" (7 Days/Peak: 4) Leona Lewis "Forgive Me" (12 Days/Peak: 4) Taylor Swift "Love Story" (20 Days/Peak: 1[4]) Pussycat Dolls "IHTP" (10 Days/Peak: 4)
Ciara f/ T-Pain "Go Girl" (20th Day/-1/Peak: 1[2]) Keri Hilson f/ Timbaland "Return The Favor" (7th Day/-2/Peak: 4) The Killers "Human" (5th Day/+2/Peak: 8) Natasha Bedingfield "Angel" (37th Day/-1/Peak: 1[4]) T.I. f/ Rihanna "Live Your Life" (3rd Day/-1/Peak: 5) Britney Spears "Womanizer" (17th Day/-1/Peak: 1[5]) Christina Aguilera "KGB" (2nd Day/+4/Peak: 4) Chris Brown f/ Keri Hilson "Superhuman" (10th Day/-2/Peak: 1[2]) Beyonce "If I Were A Boy" (14th Day/+1/Peak: 1[4]) Mariah Carey "I Stay In Love" (4th Day/+1/Peak: 1[1])
None
Duffy "Stepping Stone"
Fergie "Clumsy" (January 2nd)
Jordin Sparks "Tattoo" (January 24th)
Alicia Keys "Like You'll Never See Me Again" (February 4th)
Chris Brown "With You" (February 11th)
Britney Spears "Piece Of Me" (February 25th)
Janet Jackson "Feedback" (March 7th)
Rihanna "Don't Stop The Music" (March 11th)
Carrie Underwood "All-American Girl" (March 26th)
Paula Abdul "Dance Like There's No Tomorrow" (April 18th)
Leona Lewis "Bleeding Love" (April 21st)
Jordin Sparks f/ Chris Brown "No Air" (April 21st)
Mariah Carey "Touch My Body" (April 23rd)
Britney Spears "Break The Ice" (May 9th)
Madonna f/ Justin Timberlake and Timbaland "4 Minutes" (May 30th)
Usher f/ Young Jeezy "Love In This Club" (June 2nd)
Alicia Keys "Teenage Love Affair" (June 18th)
Rihanna "Take A Bow" (June 23rd)
Chris Brown "Forever" (June 27th)
Maroon 5 f/ Rihanna "If I Never See Your Face Again" (July 11th)
Carrie Underwood "Last Name" (July 11th)
Pussycat Dolls "When I Grow Up" (August 8th)
Jordin Sparks "One Step At A Time" (August 13th)
Alicia Keys "Superwoman" (September 9th)
Rihanna "Disturbia" (September 17th)
Coldplay "Viva La Vida" (September 30th)
Carrie Underwood "Just A Dream" (October 6th)
Pink "So What" (October 17th)
Brandy "Right Here (Departed)" (October 31st)
Coldplay "Lovers In Japan"
Ludacris f/ T-Pain "One More Drink"
Leona Lewis "Forgive Me" (12 Days/Peak: 4) The Killers "Human" (5 Days/Peak: 4) Taylor Swift "Love Story" (20 Days/Peak: 1[4]) Ciara f/ T-Pain "Go Girl" (20 Days/Peak: 1[2]) Pussycat Dolls "IHTP" (10 Days/Peak: 4)
Duffy "Stepping Stone" (1st Day/DEBUT/Peak: 10) Natasha Bedingfield "Angel" (38th Day/-2/Peak: 1[4]) Common f/ Pharrell "UMC" (8th Day/RETURN/Peak: 4) Keri Hilson f/ Timbaland "Return The Favor" (8th Day/+2/Peak: 4) Chris Brown f/ Keri Hilson "Superhuman" (11th Day/-3/Peak: 1[2]) Britney Spears "Womanizer" (18th Day/=/Peak: 1[5]) T.I. f/ Rihanna "Live Your Life" (4th Day/+2/Peak: 4) Mariah Carey "I Stay In Love" (5th Day/-2/Peak: 1[1]) Christina Aguilera "KGB" (3rd Day/+2/Peak: 2) Beyonce "If I Were A Boy" (15th Day/+1/Peak: 1[5])
Ciara f/ T-Pain "Go Girl" at #10
The Killers "Human" at #8
Coldplay "Lovers In Japan"
Fergie "Clumsy" (January 2nd)
Jordin Sparks "Tattoo" (January 24th)
Alicia Keys "Like You'll Never See Me Again" (February 4th)
Chris Brown "With You" (February 11th)
Britney Spears "Piece Of Me" (February 25th)
Janet Jackson "Feedback" (March 7th)
Rihanna "Don't Stop The Music" (March 11th)
Carrie Underwood "All-American Girl" (March 26th)
Paula Abdul "Dance Like There's No Tomorrow" (April 18th)
Leona Lewis "Bleeding Love" (April 21st)
Jordin Sparks f/ Chris Brown "No Air" (April 21st)
Mariah Carey "Touch My Body" (April 23rd)
Britney Spears "Break The Ice" (May 9th)
Madonna f/ Justin Timberlake and Timbaland "4 Minutes" (May 30th)
Usher f/ Young Jeezy "Love In This Club" (June 2nd)
Alicia Keys "Teenage Love Affair" (June 18th)
Rihanna "Take A Bow" (June 23rd)
Chris Brown "Forever" (June 27th)
Maroon 5 f/ Rihanna "If I Never See Your Face Again" (July 11th)
Carrie Underwood "Last Name" (July 11th)
Pussycat Dolls "When I Grow Up" (August 8th)
Jordin Sparks "One Step At A Time" (August 13th)
Alicia Keys "Superwoman" (September 9th)
Rihanna "Disturbia" (September 17th)
Coldplay "Viva La Vida" (September 30th)
Carrie Underwood "Just A Dream" (October 6th)
Pink "So What" (October 17th)
Brandy "Right Here (Departed)" (October 31st)
Taylor Swift "Love Story" (20 Days/Peak: 1[4]) Common f/ Pharrell "UMC" (8 Days/Peak: 4) Leona Lewis "Forgive Me" (12 Days/Peak: 4) Pussycat Dolls "IHTP" (10 Days/Peak: 4) Ciara f/ T-Pain "Go Girl" (20 Days/Peak: 1[2])
Coldplay "Lovers In Japan" (1st Day/DEBUT/Peak: 10) Keri Hilson f/ Timbaland "Return The Favor" (9th Day/-2/Peak: 4) Chris Brown f/ Keri Hilson "Superhuman" (12th Day/-2/Peak: 1[2]) Natasha Bedingfield "Angel" (39th Day/+2/Peak: 1[4]) Duffy "Stepping Stone" (2nd Day/+4/Peak: 6) T.I. f/ Rihanna "Live Your Life" (5th Day/-1/Peak: 4) Mariah Carey "I Stay In Love" (6th Day/-1/Peak: 1[1]) Beyonce "If I Were A Boy" (16th Day/-2/Peak: 1[5]) Britney Spears "Womanizer" (19th Day/+3/Peak: 1[5]) Christina Aguilera "KGB" (4th Day/+1/Peak: 1[1])
Common f/ Pharrell "UMC" at #8
None
Fergie "Clumsy" (January 2nd)
Jordin Sparks "Tattoo" (January 24th)
Alicia Keys "Like You'll Never See Me Again" (February 4th)
Chris Brown "With You" (February 11th)
Britney Spears "Piece Of Me" (February 25th)
Janet Jackson "Feedback" (March 7th)
Rihanna "Don't Stop The Music" (March 11th)
Carrie Underwood "All-American Girl" (March 26th)
Paula Abdul "Dance Like There's No Tomorrow" (April 18th)
Leona Lewis "Bleeding Love" (April 21st)
Jordin Sparks f/ Chris Brown "No Air" (April 21st)
Mariah Carey "Touch My Body" (April 23rd)
Britney Spears "Break The Ice" (May 9th)
Madonna f/ Justin Timberlake and Timbaland "4 Minutes" (May 30th)
Usher f/ Young Jeezy "Love In This Club" (June 2nd)
Alicia Keys "Teenage Love Affair" (June 18th)
Rihanna "Take A Bow" (June 23rd)
Chris Brown "Forever" (June 27th)
Maroon 5 f/ Rihanna "If I Never See Your Face Again" (July 11th)
Carrie Underwood "Last Name" (July 11th)
Pussycat Dolls "When I Grow Up" (August 8th)
Jordin Sparks "One Step At A Time" (August 13th)
Alicia Keys "Superwoman" (September 9th)
Rihanna "Disturbia" (September 17th)
Coldplay "Viva La Vida" (September 30th)
Carrie Underwood "Just A Dream" (October 6th)
Pink "So What" (October 17th)
Brandy "Right Here (Departed)" (October 31st)
Taylor Swift "Love Story" (20 Days/Peak: 1[4]) Common f/ Pharrell "UMC" (8 Days/Peak: 4) Ciara f/ T-Pain "Go Girl" (20 Days/Peak: 1[2]) Leona Lewis "Forgive Me" (12 Days/Peak: 4) Pussycat Dolls "IHTP" (10 Days/Peak: 4)
Coldplay "Lovers In Japan" (2nd Day/=/Peak: 10) Keri Hilson f/ Timbaland "Return The Favor" (10th Day/=/Peak: 4) Chris Brown f/ Keri Hilson "Superhuman" (13th Day/=/Peak: 1[2]) T.I. f/ Rihanna "Live Your Life" (6th Day/-2/Peak: 4) Duffy "Stepping Stone" (3rd Day/=/Peak: 6) Natasha Bedingfield "Angel" (40th Day/+2/Peak: 1[4]/RETIRED) Mariah Carey "I Stay In Love" (7th Day/=/Peak: 1[1]) Christina Aguilera "KGB" (5th Day/-2/Peak: 1[1]) Beyonce "If I Were A Boy" (17th Day/+1/Peak: 1[5]) Britney Spears "Womanizer" (20th Day/+1/Peak: 1[6])
None
Estelle f/ Sean Paul "Come Over"
Fergie "Clumsy" (January 2nd)
Jordin Sparks "Tattoo" (January 24th)
Alicia Keys "Like You'll Never See Me Again" (February 4th)
Chris Brown "With You" (February 11th)
Britney Spears "Piece Of Me" (February 25th)
Janet Jackson "Feedback" (March 7th)
Rihanna "Don't Stop The Music" (March 11th)
Carrie Underwood "All-American Girl" (March 26th)
Paula Abdul "Dance Like There's No Tomorrow" (April 18th)
Leona Lewis "Bleeding Love" (April 21st)
Jordin Sparks f/ Chris Brown "No Air" (April 21st)
Mariah Carey "Touch My Body" (April 23rd)
Britney Spears "Break The Ice" (May 9th)
Madonna f/ Justin Timberlake and Timbaland "4 Minutes" (May 30th)
Usher f/ Young Jeezy "Love In This Club" (June 2nd)
Alicia Keys "Teenage Love Affair" (June 18th)
Rihanna "Take A Bow" (June 23rd)
Chris Brown "Forever" (June 27th)
Maroon 5 f/ Rihanna "If I Never See Your Face Again" (July 11th)
Carrie Underwood "Last Name" (July 11th)
Pussycat Dolls "When I Grow Up" (August 8th)
Jordin Sparks "One Step At A Time" (August 13th)
Alicia Keys "Superwoman" (September 9th)
Rihanna "Disturbia" (September 17th)
Coldplay "Viva La Vida" (September 30th)
Carrie Underwood "Just A Dream" (October 6th)
Pink "So What" (October 17th)
Brandy "Right Here (Departed)" (October 31st)
Natasha Bedingfield "Angel" (November 7th)
Nickelback "Gotta Be Somebody"
Ludacris f/ T-Pain "One More Drink"
Keyshia Cole "Playa Cardz Right"
Common f/ Pharrell "UMC" (8 Days/Peak: 4) Kevin Rudolf "Let It Rock" (20 Days/Peak: 1[2]) Coldplay "Lovers In Japan" (2 Days/Peak: 10) Ciara f/ T-Pain "Go Girl" (20 Days/Peak: 1[2]) Leona Lewis "Forgive Me" (12 Days/Peak: 4)
Estelle f/ Sean Paul "Come Over" (1st Day/DEBUT/Peak: 10) Pussycat Dolls "IHTP" (11th Day/RETURN/Peak: 4) Keri Hilson f/ Timbaland "Return The Favor" (11th Day/+1/Peak: 4) Chris Brown f/ Keri Hilson "Superhuman" (14th Day/+1/Peak: 1[2]) Mariah Carey "I Stay In Love" (8th Day/-2/Peak: 1[1]) T.I. f/ Rihanna "Live Your Life" (7th Day/+1/Peak: 4) Duffy "Stepping Stone" (4th Day/+2/Peak: 4) Beyonce "If I Were A Boy" (18th Day/-1/Peak: 1[5]) Christina Aguilera "KGB" (6th Day/+1/Peak: 1[1]) Britney Spears "Womanizer" (21st Day/=/Peak: 1[7])
Coldplay "Lovers In Japan" at #10
Natasha Bedingfield "Angel" at #5 [RETIRED]
None
Fergie "Clumsy" (January 2nd)
Jordin Sparks "Tattoo" (January 24th)
Alicia Keys "Like You'll Never See Me Again" (February 4th)
Chris Brown "With You" (February 11th)
Britney Spears "Piece Of Me" (February 25th)
Janet Jackson "Feedback" (March 7th)
Rihanna "Don't Stop The Music" (March 11th)
Carrie Underwood "All-American Girl" (March 26th)
Paula Abdul "Dance Like There's No Tomorrow" (April 18th)
Leona Lewis "Bleeding Love" (April 21st)
Jordin Sparks f/ Chris Brown "No Air" (April 21st)
Mariah Carey "Touch My Body" (April 23rd)
Britney Spears "Break The Ice" (May 9th)
Madonna f/ Justin Timberlake and Timbaland "4 Minutes" (May 30th)
Usher f/ Young Jeezy "Love In This Club" (June 2nd)
Alicia Keys "Teenage Love Affair" (June 18th)
Rihanna "Take A Bow" (June 23rd)
Chris Brown "Forever" (June 27th)
Maroon 5 f/ Rihanna "If I Never See Your Face Again" (July 11th)
Carrie Underwood "Last Name" (July 11th)
Pussycat Dolls "When I Grow Up" (August 8th)
Jordin Sparks "One Step At A Time" (August 13th)
Alicia Keys "Superwoman" (September 9th)
Rihanna "Disturbia" (September 17th)
Coldplay "Viva La Vida" (September 30th)
Carrie Underwood "Just A Dream" (October 6th)
Pink "So What" (October 17th)
Brandy "Right Here (Departed)" (October 31st)
Natasha Bedingfield "Angel" (November 7th)
Nickelback "Gotta Be Somebody"
Ludacris f/ T-Pain "One More Drink"
Keyshia Cole "Playa Cardz Right"
Kevin Rudolf "Let It Rock" (20 Days/Peak: 1[2])
Common f/ Pharrell "UMC" (7 Days/Peak: 4)
Leona Lewis "Forgive Me" (12 Days/Peak: 4)
Taylor Swift "Love Story" (20 Days/Peak: 1[4])
Pussycat Dolls "IHTP" (10 Days/Peak: 4)
Ciara f/ T-Pain "Go Girl" (20th Day/-1/Peak: 1[2])
Keri Hilson f/ Timbaland "Return The Favor" (7th Day/-2/Peak: 4)
The Killers "Human" (5th Day/+2/Peak: 8) 
Natasha Bedingfield "Angel" (37th Day/-1/Peak: 1[4]) 
T.I. f/ Rihanna "Live Your Life" (3rd Day/-1/Peak: 5)
Britney Spears "Womanizer" (17th Day/-1/Peak: 1[5])
Christina Aguilera "KGB" (2nd Day/+4/Peak: 4)
Chris Brown f/ Keri Hilson "Superhuman" (10th Day/-2/Peak: 1[2])
Beyonce "If I Were A Boy" (14th Day/+1/Peak: 1[4])
Mariah Carey "I Stay In Love" (4th Day/+1/Peak: 1[1])
