Just finished watching Akira... Totally crazy telekinetic evolutionary messianic cultist gangster madness :S
It kept my attention thought so thumbs up ^^
Just finished watching Gantz... pretty much all I can say is WTF... Oh and all the 'shoot/don't shoot' crap was hella annoying. The characters were also really cowardly, stupid, lame, and seemed to stand around a lot. The episodes after the temple battle were even worse.
Oh but there was one really hot sex scene, so it might be worth it just for that - if you want something different/weird for a change of pace this is also for you, I don't think I've seen another anime like it.