the best one on that list is code geass. the end of the season two is awesome. who do you know would give their life to make the world peacefull. also make the whole world hate you and be happy you are dead.

 i added a brief synopis for each. some sites to check are veoh.com, youtube.com, megavideo.com, animefreak.tv, otakucenter.com, animefuel.com, blazinanime.com, justdubs.net (also check myspace.com). if not try looking for shows by using google video. some of these anime play on adult swim (cartoon network on saturday) or ani-monday on sci-fi. IFC (131 on Direct tv) has hell girl, witch blade, used to play gunslinger girl. COLRS apparently played Fruit basket, Channel 157 OVATVN played the films Blood last vampire and Ghost in the Shell. 

rurouni kenshin is about a wandering samurai who has mended his ways and promises to never kill again, however his past catches up with him and his new life as enemies look for hitokiri battousai the feared manslayer of the meiji revolution. (the author of <- also did buso renkin, haven't seen it but it looks cool).

dragon ball/z/gt is based off the story journey to the west and later incorporates science fiction elements to the story. son goku is an orphan child who meets bulma and they embark on a quest to find the dragon balls and get their wishes granted.

trigun is about the human typhoon known as vash the stampede. he is a notorius gunslinger on the planet gunsmoke and is acredited with the destruction of the city of july...funny thing is nobody died. the story follows vash and the insurance agents as they try to mimize the damage he unwittingly causes.

hellsing/ultimate is a modern spin on bram strokers dracula. the hellsing agency combats the undead hordes of the nazi letztes battalion millenium with their weapon...the vampire codenamed alucrad.

ghost in the shell is about advances in technology and the crime that evolved alongside it. u follow the exploits of section 9 and major motoko kusanagi as they uncover conspiracies.

cowboy bebop is about a group of bounty hunters and their exploits choreographed to jazz.

code geass, inuyasha, neon genesis evangelion are also good. pretty much any gundam is good but so far my all time fav is gundam 00. if you like mindless violence and school girls see ikki tousen (there is no plot really). I'm currently checking out black lagoon (is about a group of mercenaries working in china, lots of violence, babes, and complex musings), berserk (ask zaborg), trinity blood (humanity goes to mars and nano-machines create 2 races of vampires, the colonist head back to earth were the remainding humans have gone through WWIII and the apocalypse. The Catholic church is a stabilizing force. Some of the vampires are enslaved others rebel and some help the humans. hope that helps, the themes are kind of all over the place so hopefully u find something u like.

(sorry about the length of the post)

 i think on wikipedia it said 6 is coming out in japan sometime this year. i don't know when the release date is for the english volume 5 is...me want to see krieg! 4 is awesome by the way.