That's one hell of a list dude, but you know HappyThankYouMorePlease has my endorsement. Red State should be available on iTunes soon as well, which is something I STRONGLY recommend.
Have you seen Hesher yet? I tried to see it at Sundance in 2010, but as you could imagine, I got locked out! A few other movies from the festival that I suggest checking out are High School (solid stoner comedy), Boy (coming of age comedy from New Zealand), and Splice, if you haven't seen it yet.
Nah haven't seen Hesher yet but it's on my to-watch list, looks pretty good. I'll write down those few you just suggested too. I've actually got Splice on my DVR, but figured it sucked. It was good?
Anyways, just about to finish this Brotherhood film and it's pretty fuckin' fantastic, if you like gritty realistic thrillers this shit is for you. A frat hazing prank goes wrong and they wind up accidentally sort of robbing a store and having a gunfight with the store clerk and it's all about a race for them to try and cover their asses. Good shit, I enjoyed it thoroughly. Good acting. Quick film too, only like 76 minutes or something.