Estelle f/ Sean Paul "Come Over" (1 Day/Peak: 10) Kevin Rudolf "Let It Rock" (20 Days/Peak: 1[2]) Coldplay "Lovers In Japan" (2 Days/Peak: 10) Common f/ Pharrell "UMC" (8 Days/Peak: 4) Ciara f/ T-Pain "Go Girl" (20 Days/Peak: 1[2])
Keri Hilson f/ Timbaland "Return The Favor" (12th Day/-2/Peak: 4) Leona Lewis "Forgive Me" (13th Day/RETURN/Peak: 4) Duffy "Stepping Stone" (5th Day/-4/Peak: 4) Pussycat Dolls "IHTP" (12th Day/+2/Peak: 4) Chris Brown f/ Keri Hilson "Superhuman" (15th Day/+1/Peak: 1[2]) Mariah Carey "I Stay In Love" (9th Day/+1/Peak: 1[1]) T.I. f/ Rihanna "Live Your Life" (8th Day/+1/Peak: 4) Beyonce "If I Were A Boy" (19th Day/=/Peak: 1[5]) Britney Spears "Womanizer" (22nd Day/-1/Peak: 1[7]) Christina Aguilera "KGB" (7th Day/+1/Peak: 1[2])
Estelle f/ Sean Paul "Come Over" at #10
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"
Coldplay "Lovers In Japan" (2 Days/Peak: 10) [B]The Killers "Human" (6 Days/Peak: 8)[/B) Kevin Rudolf "Let It Rock" (20 Days/Peak: 1[2]) Common f/ Pharrell "UMC" (8 Days/Peak: 4) Ciara f/ T-Pain "Go Girl" (20 Days/Peak: 1[2])
Keri Hilson f/ Timbaland "Return The Favor" (13th Day/=/Peak: 4) Pussycat Dolls "IHTP" (13th Day/-2/Peak: 4) Duffy "Stepping Stone" (6th Day/=/Peak: 4) Leona Lewis "Forgive Me" (14th Day/+2/Peak: 4) Chris Brown f/ Keri Hilson "Superhuman" (16th Day/=/Peak: 1[2]) Britney Spears "Womanizer" (23rd Day/-3/Peak: 1[7]) Mariah Carey "I Stay In Love" (10th Day/+1/Peak: 1[1]) Christina Aguilera "KGB" (8th Day/-2/Peak: 1[2]) T.I. f/ Rihanna "Live Your Life" (8th Day/+2/Peak: 2) Beyonce "If I Were A Boy" (20th Day/+2/Peak: 1[6])
None
Ludacris f/ T-Pain "One More Drink"
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)
Keyshia Cole "Playa Cardz Right"
All-American Rejects "Gives You Hell"
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]) Common f/ Pharrell "UMC" (8 Days/Peak: 4) Duffy "Stepping Stone" (6 Days/Peak: 4)
Keri Hilson f/ Timbaland "Return The Favor" (14th Day/=/Peak: 4) Ludacris f/ T-Pain "One More Drink" (1st Day/DEBUT/Peak: 9) Leona Lewis "Forgive Me" (15th Day/-1/Peak: 4) Chris Brown f/ Keri Hilson "Superhuman" (17th Day/-1/Peak: 1[2]) Christina Aguilera "KGB" (9th Day/-3/Peak: 1[2]) Pussycat Dolls "IHTP" (14th Day/+4/Peak: 4) Britney Spears "Womanizer" (24th Day/+1/Peak: 1[7]) Beyonce "If I Were A Boy" (21st Day/-2/Peak: 1[6]) Mariah Carey "I Stay In Love" (11th Day/+2/Peak: 1[1]) T.I. f/ Rihanna "Live Your Life" (9th Day/+1/Peak: 1[1])
Duffy "Stepping Stone" at #8
Keyshia Cole "PCR"
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)
Keyshia Cole "PCR" (1st Day/DEBUT/Peak: 10) Pussycat Dolls "IHTP" (15th Day/-4/Peak: 4) Christina Aguilera "KGB" (10th Day/-2/Peak: 1[2]) Leona Lewis "Forgive Me" (16th Day/+1/Peak: 4) Ludacris f/ T-Pain "One More Drink" (2nd Day/+3/Peak: 6) Chris Brown f/ Keri Hilson "Superhuman" (18th Day/+2/Peak: 1[2]) T.I. f/ Rihanna "Live Your Life" (10th Day/-3/Peak: 1[1]) Britney Spears "Womanizer" (25th Day/+1/Peak: 1[7]) Beyonce "If I Were A Boy" (22nd Day/+1/Peak: 1[6]) Mariah Carey "I Stay In Love" (12th Day/+1/Peak: 1[2])
Keri Hilson f/ Timbaland "Return The Favor" at #10
All-American Rejects "GYH"
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)
Estelle f/ Sean Paul "Come Over" (1 Day/Peak: 10) 
Kevin Rudolf "Let It Rock" (20 Days/Peak: 1[2])
Coldplay "Lovers In Japan" (2 Days/Peak: 10)
Common f/ Pharrell "UMC" (8 Days/Peak: 4)
Ciara f/ T-Pain "Go Girl" (20 Days/Peak: 1[2])
Keri Hilson f/ Timbaland "Return The Favor" (12th Day/-2/Peak: 4)
Leona Lewis "Forgive Me" (13th Day/RETURN/Peak: 4) 
Duffy "Stepping Stone" (5th Day/-4/Peak: 4)
Pussycat Dolls "IHTP" (12th Day/+2/Peak: 4)
Chris Brown f/ Keri Hilson "Superhuman" (15th Day/+1/Peak: 1[2])
Mariah Carey "I Stay In Love" (9th Day/+1/Peak: 1[1]) 
T.I. f/ Rihanna "Live Your Life" (8th Day/+1/Peak: 4)
Beyonce "If I Were A Boy" (19th Day/=/Peak: 1[5]) 
Britney Spears "Womanizer" (22nd Day/-1/Peak: 1[7])
Christina Aguilera "KGB" (7th Day/+1/Peak: 1[2])
