Final Fantasy. He was incredible. Created his entire sound with one violin and loop pedals while a diminutive native american woman created stories using some cut outs and a old school type projector.
Another vote for Fucked Up, Pink Eyes crowd jumped and broke some dudes leg when I saw them.
Lots of stoner-metal bands are fucking awesome too, I saw Church of Misery and they LITERALLY blew me away. So loud and mental that my chest hurt from bass and I had to get air due to extreme metalness.
Wow, you really ARE a hipster :P