I like Heiroglyphics and both Del the Funky Homosapien and Opio (both from Heiroglyphics) are good. I also like Madlib and Quasimoto (same guy) are good, also the Lootpack (which includes Madlib).
Jurassic Five is always good, too. And don't even get me started on the oldschool stuff from the 80s and 90s.
But hey, I also like Kanye West so what do I know.