Alibi V.19 No.1 • Jan 7-13, 2010 
Radiohead's Kid A [2000] was the decade's best album (according to Rolling Stone), with track "Idioteque" showing up as the 8th best song of the decade (according to Pitchfork.com).

Feature

A Decade’s Detritus: Music

Nielsen SoundScan Best-Selling Albums

2009: Fearless Taylor Swift
2008: Tha Carter III Lil Wayne
2007: Noel Josh Groban
2006: High School Musical Soundtrack various artists
2005: The Emancipation of Mimi Mariah Carey
2004: Confessions Usher
2003: Get Rich or Die Tryin’ 50 Cent
2002: The Eminem Show Eminem
2001: Hybrid Theory Linkin Park
2000: No Strings Attached 'N Sync

Rolling Stone’s Best Albums of the Decade

10) The College Dropout Kanye West [2004]
9) Kala M.I.A. [2007]
8) Modern Times Bob Dylan [2006]
7) The Marshall Mathers LP Eminem [2000]
6) Funeral Arcade Fire [2004]
5) Elephant The White Stripes [2003]
4) The Blueprint Jay-Z [2001]
3) Yankee Hotel Foxtrot Wilco [2001]
2) Is This It The Strokes [2001]
1) Kid A Radiohead [2000]

Pitchfork.com's Top 10 Tracks of the Decade

10) Arcade Fire "Neighborhood #1 (Tunnels)" [2004]
9) Animal Collective "My Girls" [2009]
8) Radiohead "Idioteque" [2000]
7) Missy Elliott "Get Ur Freak On" [2001]
6) Yeah Yeah Yeahs "Maps" [2003]
5) Daft Punk "One More Time" [2000]
4) Beyoncé [featuring Jay-Z] "Crazy in Love" [2003]
3) M.I.A. [featuring Bun B and Rich Boy] "Paper Planes (Diplo Remix)"
[2007]
2) LCD Soundsystem "All My Friends" [2007]
1) OutKast "B.O.B." ("Bombs Over Baghdad") [2000]