In no particular order:
Animal Collective - Feels [Absolutely amazing album. Perfect blend mellow and upbeat music.]
Brand New - Deja Entendu [No specific reason as to why I find this album so much more enjoyable than the rest, but it is definitely a "must listen to" kind of album.]
Circle Takes the Square - As the Roots Undo [Favorite band/favorite album of all time]
Iron & Wine - The Shepherd's Dog [As much as I love every other one of their albums this one just really seemed to hit home for me.]
Modest Mouse - The Moon & Antarctica [One of their catchiest/impressive albums.]
The Spill Canvas - One Fell Swoop [Perfect album to listen to when you're feeling down.]
Sufjan Stevens - Illinois [The man is a genius and this album shows it. Perfect for any mood.]
Underoath - Cries of the Past [Before Dallas left and before they became the not-so-amazing post-hardcore that they are now. The album has amazing double bass and some beautiful breakdowns.]
Wilco - Yankee Hotel Foxtrot [So many albums, so many to choose from. This one is just my particular favorite]

I could sit here and list bands and albums for the rest of the day, but I fear I must put a limit to my writings. So these are some of the ones on the top of my list.

__________________