I'm a huge fan of gabber/speedcore.
IDM and 604 are pretty sweet too.

I especially like Realicide CREW from Cincinnati, Ohio. I've seen them play three times, and they get better ever time.

As far as IDM goes, Mouse on Mars and Four-Tet are nice.

I used to make electronica, and a friend of mine is pretty good at it. It's all very experimental. Looking at the first post of this, it doesn't fit into any of the categories listed. It often sounds more like video game music than anything.

Anyone use FL Studio or AcidPro?