Cassie "Official Girl" (10th Day/-1/Peak: 4) Leona Lewis "Better In Time" (11th Day/RETURN/Peak: 4) Metallica "The Day That Never Comes" (1st Day/DEBUT/Peak: 8) Lady GaGa "Just Dance" (6th Day/-2/Peak: 4) Plain White T's "Natural Disaster" (6th Day/-2/Peak: 4) Coldplay "Viva La Vida" (27th Day/+2/Peak: 1[4]) Brandy "Right Here (Departed)" (4th Day/-1/Peak: 3) Carrie Underwood "Just A Dream" (23rd Day/+3/Peak: 1[4]) Rihanna "Disturbia" (37th Day/=/Peak: 1[12]) Pink "So What" (14th Day/=/Peak: 1[4])
John Legend "Green Light" at #10
Maroon 5 "Goodnight Goodnight" at #9
Ludacris f/ Chris Brown and Sean Garrett "What Them Girls Like"
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)
Ludacris f/ Chris Brown and Sean Garrett "What Them Girls Like" (1st Day/DEBUT/Peak: 10) Maroon 5 "Goodnight Goodnight" (10th Day/RETURN/Peak: 4) Leona Lewis "Better In Time" (12th Day/+1/Peak: 4) Lady GaGa "Just Dance" (7th Day/=/Peak: 4) Carrie Underwood "Just A Dream" (24th Day/-3/Peak: 1[4]) Metallica "The Day That Never Comes" (2nd Day/+3/Peak: 5) Coldplay "Viva La Vida" (28th Day/+1/Peak: 1[4]) Pink "So What" (15th Day/-2/Peak: 1[4]) Brandy "Right Here (Departed)" (5th Day/+2/Peak: 2) Rihanna "Disturbia" (38th Day/+1/Peak: 1[13])
Cassie "Official Girl" at #10
Plain White T's "Natural Disaster" at #6
Natasha Bedingfield "Angel"
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)
David Archuleta "Crush"
Leona Lewis "Forgive Me"
Taylor Swift "Love Story"
LL Cool J f/ The Dream "Baby" (10 Days/Peak: 4)
Jessica Simpson "Come On Over" (20 Days/Peak: 4)
Ne-Yo "Miss Independent" (6 Days/Peak: 4)
John Legend "Green Light" (10 Days/Peak: 4)
Maroon 5 "Goodnight Goodnight" (9 Days/Peak: 4)
Cassie "Official Girl" (10th Day/-1/Peak: 4)
Leona Lewis "Better In Time" (11th Day/RETURN/Peak: 4)
Metallica "The Day That Never Comes" (1st Day/DEBUT/Peak: 8)
Lady GaGa "Just Dance" (6th Day/-2/Peak: 4)
Plain White T's "Natural Disaster" (6th Day/-2/Peak: 4)
Coldplay "Viva La Vida" (27th Day/+2/Peak: 1[4])
Brandy "Right Here (Departed)" (4th Day/-1/Peak: 3)
Carrie Underwood "Just A Dream" (23rd Day/+3/Peak: 1[4]) 
Rihanna "Disturbia" (37th Day/=/Peak: 1[12])
Pink "So What" (14th Day/=/Peak: 1[4])
