I've just recently gotten into this experimental group. Despite my confidence that I couldn't sit through a 8+ min song, I can manage to sit through the 15 min+ Volta songs. They're dropping a new album in a few weeks and from the sound of a jew songs it sounds like their best. Here's one of my favorites:

Goliath- http://www.youtube.com/watch?v=xRDG9GKb-TM

I saw them live when they were the opening act for the Red Hot Chili Peppers on their last tour and They were actually good.