Frontrunners:Pearl Jam's Backspacer and Muse's The Resistance. I wouldn't count out Tom Petty & the Heartbreakers' Mojo, as way for Grammy nostalgia to wield some influence here.
Other contenders: Gaslight Anthem's American Slang is quite deserving, as is Linkin Park's A Thousand Suns. Also could go to Lynard Skynard's God & Guns, Neil Young's Le Noise, or Paramore's Brand New Eyes.
Notes: Robert Plant's Band of Joy was not submitted, although it was put in for Album of the Year. Lil Wayne's Rebirth was submitted, but surely has no shot of a nod.
Frontrunners: The two biggest buzzworthy alternative albums this year were The Arcade Fire's The Suburbs and Vampire Weekend's Contra, both of which sound easily get a nod. Also, LCD Soundsystem's This Is Happening, supposedly his last album, may be hard to resist. Finally, I'd like the think that The National's highly acclaimed masterful album High Violet is a front runner.
Other contenders: Broken Bells, The Black Keys' Brothers, MGMT's Congratulations, M.I.A.'s Maya, Hot Chip's One Life Stand, Gorillaz's Plastic Beach, Spoon's Transference, Yeasayer's Odd Blood, Sleigh Bells' Treats and Of Montreal's False Priest.