They were in Bonnaroo last year, generated a lot of buzz, and are doing it again this year.
Here's their website http://www.myspace.com/mutemath. The lead singer sounds a bit like Sting, and their drummer is just insane.
Rumor has it that Billy Corgan wants them to open for an upcoming Smashing Pumpkins tour, but take it with a grain of salt.
Soo.. any Mute Math fans out there?