The only person here who has a less than mainstream/emo taste in music is FreePlay.
I would recommend Mr.Bungle and Fantomas, both fronted by that crazy Mike Patton, and bot shizophrenic, but great (Fantomas is a little scarier) and Cathedral- a great British metal outfit, their last album is a true classic.
For reggae lovers I suggest Inner Circle or Third World- blending nu-wave synth with head bopping reggae beats. Also Beenie Man, great ragga artist.I have many more, but i've forgotten them. Massive Attack are awesome. I love dark soul.