I'm a huge fan of Mike Patton's work.
If you want more Mr Bungle like stuff, check out Fantomas.
There's also Secret Chiefs 3 (not with Mike but Trey from Mr Bungle) who did a killer cover to the Halloween theme.
I also recommend naked city, which is a lot more insane than Mr Bungle.
There's Tomahawk which is really somewhere between Me Bungle and Faith No More in terms of experimentation.
Peeping Tom which is a pop album.
Lovage which is a pretty good Trip Hop group.
There's also a good cover of Come to Daddy by the Dillinger Escape Plan where he sounds completely demonic.
A noise album with Merzbo (I think) (a Japanese guy who makes harsh noise, it's basically the deep web of music).
And then there's an album of Italian Pop covers which he did with an orchestra.
There's also countless guest appearances.
Personally, I hope he does something with Omar Rodgiuez Lopez from the Mars Volta or even Les Claypool.
Maybe he'll work with Death Grips, which seems likely as he does seem to be into that kind of music.
Yeah
@R.Graves, there's so much stuff out there.
It gets weird when you get to the cover songs like take that and his more recent Lady Gaga cover.
The guy is insanely busy. I reckon he is really Satan in disguise cause some of that music...
Just listen to Fantomas and you'll know.