The guy's definitely got a unique style. Can't find much of the same sort of clean, beautiful sort of distortion. If you're into his more recent techno-oriented stuff, there are some more experimental 4/4 / electro artists making twisted dancefloor smashers but I'm not to knowledgeable on that.
As far as "IDM", well, there's nothing quite like Clark but maybe try Prefuse73, Tom Burkank, Nautilis, Exile, Autechre obviously Aphex.
Got some mixes with Clark tracks and related music linked below - but yeah, definitely wish there were more Clarkish stuff in the world.
clark is a madman. he's got such a variety of styles. i copped Body Riddle when it came out, but his other stuff doesnt sound quite like it. id say just keep digging for more of his stuff , he's the only one who really does "his" style
