Odds are good that if you grew up in the 80's or 90's, you remember the song 'Epic' from Faith No More. Their bratty frontman, Mike Patton, has gone on to sing in many other projects. Some of the more-famous ones are:
Dillinger Escape Plan
The dude is one of my heroes in the music industry. He continues to push the envelope, and doesn't give a shit about record sales or recognition, and his art is better for it. A good example would be this live Tomahawk video, called 'God Hates a Coward.'
Sometimes weird can be good. Patton is proof of that.
EDIT: I just learned that Patton did the voices for the zombies in the video game Left 4 Dead! Very cool.