I'll rate the songs on the Now decade compilation:
01. P!nk - "Get The Party Started" (ZOMBA)**
A
02. Katy Perry - "I Kissed a Girl" (EMI)*
A
03. Rihanna featuring Jay-Z - "Umbrella" (UMG)*
A-
04. Kanye West - "Stronger" (UMG)*
A-
05. Justin Timberlake - "SexyBack" (ZOMBA)
F
06. Lil Wayne featuring Static Major - "Lollipop" (UMG)
F
07. Jennifer Lopez featuring Ja Rule - "I'm Real (Murder Remix)" (SONY)***
B
08. Shakira featuring Wyclef Jean - "Hips Don't Lie" (SONY)*
A-
09. Amy Winehouse - "Rehab" (UMG)*
A-
10. Mariah Carey - "We Belong Together" (UMG)*
A
11. Christina Aguilera - "Beautiful" (SONY)*
A
12. Alicia Keys - "Fallin'" (SONY)*
A
13. Backstreet Boys - "I Want It That Way" (ZOMBA)*
A
14. Avril Lavigne - "Complicated" (SONY)*
A
15. Lenny Kravitz - "American Woman" (EMI)
A-
16. Maroon 5 - "This Love" (UMG)*
A-
17. Nickelback - "How You Remind Me" (RR)
A
18. The Fray - "Over My Head (Cable Car)" (SONY)
C
19. Coldplay - "Clocks" (EMI)
A-
20. U2 - "Beautiful Day" (UMG)
A
Aside from 2 blips, it's quite good, I think
And Now 29:
01. P!nk - "So What" (ZOMBA)
B
02. Katy Perry - "Hot N Cold" (EMI)
A
03. Pussycat Dolls - "When I Grow Up" (UMG)
A-
04. Rihanna - "Disturbia" (UMG)
A
05. Ne-Yo - "Closer" (UMG)
B
06. Chris Brown - "Forever" (ZOMBA)
A
07. Kardinal Offishall featuring Akon - "Dangerous" (UMG)
C
08. T.I. - "Whatever You Like" (WMG)
D
09. Lil Wayne featuring T-Pain - "Got Money" (UMG)
F
10. Savage featuring Soulja Boy Tell 'Em - "Swing" (UMG)
F
11. Young Jeezy featuring Kanye West - "Put On" (UMG)
D-
12. Yung Berg featuring Casha - "The Business" (SONY)
D-
13. Jordin Sparks - "One Step at a Time" (ZOMBA)
B
14. Leona Lewis - "Better in Time" (SONY)
A-
15. Boys Like Girls - "Thunder" (SONY)
C
16. Saving Abel - "Addicted" (EMI)
B-
17. Daughtry - "What About Now" (SONY)
A-
18. Matt Nathanson - "Come On Get Higher" (EMI)
C
19. Darius Rucker - "Don't Think I Don't Think About It" (EMI)
C
20. Keith Anderson - "I Still Miss You" (SONY)
NH