Hard house and melodic trance do it for me, everything else is just a toy. Some dance is okay though. And I can put up with a lot of Fatboy Slim and Basement Jaxx without getting bored...
I can't really say it's my ultimate favourite genre. Right now I seem to be leaning toward the two extremes of ambient and metal/alternative rock.
And right now I'm listening to Aphex Twins' selected ambient works Vol 1.