I like pretty much everything that's music - everything being celtic-y fiddle tunes to hard rock to dubstep/techno to broadway to classical to pop to rap (well, to an extent) to J-Pop/K-Pop and everything in between. I'm not a huge fan of jazz though... and some country-ish stuff
Oh! And any mix that has something to do with epicosity-ness that opens with Sail by AWOLNATION is an automatic like whether or not I like the rest of it becomes instantly unimportant.
(and that pic isn't me though I wish it was)