I got into these bands after I saw them at Fuck Yeah Festival (FYF) in September. They're some of my favorite songs/albums/bands of the year, although only one of them was technically released in 2009.
No Age "Eraser" from their 2008 album Nouns on Sub Pop
with an awesome intro by Craig Ferguson
Crystal Antlers "Andrew" from their 2009 album Tentacles on Touch and Go Records
Black Lips "Katrina" from 2007's Good Bad Not Evil on Vice Records