erm... i think i read a manga long ago called "monster" which is quite psycho.... from the same author got another series called "master keaton" which is also psycho....
but dont know whether it can be obtained or not....
Oooh..Jisatsu Circle was incredibly freaky, but totally cool. Does anyone know where I can find Meiryotei Goto Seijuro? I've searched and searched and I have nothing
Tokko - I don't think the manga has an ending, which left a lot of unanswered questions (same thing for the anime version)
Bobobo -ok, it IS perhaps the lamest & weirdest... totally kuso & loaded with puns, but I actually like it bcoz that's how Bobobo manga is supposed to be
The Hour of the Mice - it pretty sadistic imo... to create an experimental elite sch where students are practically prisoners
Monster, 20th/21st Century Boys - they were all written by the same mangakan & are pretty psychotic, but Monster is real masterpiece.
Gyo (seriously, killer fish? what the hell), and there's this one manga that i completely forget the name of, but these people find holes in the side of a mountain and go inside them; and when they come back out they're all stretched and just nasty lookin'.
Never take life too seriously; nobody ever gets out alive anyway~