Rev Theory

Chances are you've heard Rev Theory and not even realized it.  They have the theme song to Blue Mountain State , Broken Bones is all over AMC's The Cleaner and their music appears in Madden Football .  If you're lucky, you own their albums.  Even luckier if you've seen them live.  This band rocks.  Hard.

Start with Light It Up and make your way over to their new album Justice .  Then backtrack and pick up their indie release Truth is Currency (under the name Revelation Theory).  
I haven't been this into a band since the gang from Saved by the Bell formed 'Zack Attack'.