Ne-Yo "Mad" (1st Day/DEBUT/Peak: 10) Chris Brown f/ Keri Hilson "Superhuman" (30th Day/-2/Peak: 1[2]) The Fray "YFM" (1st Day/DEBUT/Peak: 8) T.I. f/ Rihanna "Live Your Life" (23rd Day/-2/Peak: 1[2]) Rihanna "Rehab" (9th Day/-3/Peak: 1[1]) Pink "Sober" (2nd Day/+3/Peak: 5) Keri Hilson f/ Lil' Wayne "Turnin' Me On" (4th Day/+2/Peak: 4) Mariah Carey "I Stay In Love" (24th Day/+1/Peak: 1[2]) Beyonce "If I Were A Boy" (34th Day/-1/Peak: 1[12]) Britney Spears "Womanizer" (37th Day/+1/Peak: 1[11])
Gym Class Heroes f/ Estelle "GAC" at #10
Jesse McCartney "It's Over" at #9
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)
Chris Brown f/ Keri Hilson "Superhuman" (31st Day/-1/Peak: 1[2]) The Fray "YFM" (2nd Day/-1/Peak: 8) Ne-Yo "Mad" (2nd Day/+2/Peak: 8) Keri Hilson f/ Lil' Wayne "Turnin' Me On" (5th Day/-3/Peak: 4) T.I. f/ Rihanna "Live Your Life" (24th Day/+1/Peak: 1[2]) Pink "Sober" (3rd Day/=/Peak: 5) Rihanna "Rehab" (10th Day/+2/Peak: 1[1]) Mariah Carey "I Stay In Love" (25th Day/=/Peak: 1[2]) Beyonce "If I Were A Boy" (35th Day/=/Peak: 1[12]) Britney Spears "Womanizer" (38th Day/=/Peak: 1[12])
None
Robin Thicke "TSL"
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)
Robin Thicke "TSL" (1st Day/DEBUT/Peak: 10) Keri Hilson f/ Lil' Wayne "Turnin' Me On" (6th Day/-2/Peak: 4) Chris Brown f/ Keri Hilson "Superhuman" (32nd Day/+2/Peak: 1[2]) Ne-Yo "Mad" (3rd Day/+1/Peak: 7) Mariah Carey "I Stay In Love" (26th Day/-3/Peak: 1[2]) T.I. f/ Rihanna "Live Your Life" (25th Day/+1/Peak: 1[2]) Pink "Sober" (4th Day/+1/Peak: 4) Rihanna "Rehab" (11th Day/+1/Peak: 1[1]) Beyonce "If I Were A Boy" (36th Day/=/Peak: 1[12]) Britney Spears "Womanizer" (39th Day/=/Peak: 1[13])
The Fray "YFM" at #9
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)
Common f/ Pharrell "UMC" (10 Days/Peak: 4)
Jesse McCartney "It's Over" (6 Days/Peak: 7)
Gym Class Heroes f/ Estelle "GAC" (2 Days/Peak: 10)
Duffy "Stepping Stone" (6 Days/Peak: 4)
All-American Rejects "GYH" (10 Days/Peak: 4)
Ne-Yo "Mad" (1st Day/DEBUT/Peak: 10)
Chris Brown f/ Keri Hilson "Superhuman" (30th Day/-2/Peak: 1[2])
The Fray "YFM" (1st Day/DEBUT/Peak: 8)
T.I. f/ Rihanna "Live Your Life" (23rd Day/-2/Peak: 1[2])
Rihanna "Rehab" (9th Day/-3/Peak: 1[1])
Pink "Sober" (2nd Day/+3/Peak: 5)
Keri Hilson f/ Lil' Wayne "Turnin' Me On" (4th Day/+2/Peak: 4) 
Mariah Carey "I Stay In Love" (24th Day/+1/Peak: 1[2])
Beyonce "If I Were A Boy" (34th Day/-1/Peak: 1[12])
Britney Spears "Womanizer" (37th Day/+1/Peak: 1[11])
