I've done:
Pot
Hash
Morphine
LSD
Halucinigenic Mushrooms
I still like to smoke a little, but I keep myself a lightweight on purpose. It only takes 2 small hits for me to get a real good buzz.
Haven't done acid in about 10 years. Did mushrooms about 5 years ago, I'd do 'em again. I'd try Extacy if somebody got some good shit!