Anime series that keep you hooked

I have a question to all hardcore anime watchers here.
I've watched about 5-7 full anime series ever because everytime I start watching one I get bored after 1 or 2 eps. Latest one I watched was Ichigo Mashimaro and I only watched half of it because I couldn't find subs for episode 7-12. I found it to be pretty entertaining and "easy" to watch. Other series I've watched are Hellsing, GTO, Azumanga Daioh and R.O.D , all of them were decent atleast and kept me hooked enough to watch them. So hit me with your recommendations of anime series that won't bore me to hell and make me stop watching after the first episode.

Just to add to some of the recommendations. . .

The titles in quotations are the English Titles.
Tri-gun.
Hajime no Ippo/"Fighting Spirits"
Full Metal Panic/Fumoffu/The Second Strike
Vandread
Mai-Hime
Ghost in the Shell: Stand Alone Complex
Detecitive Conan/"Case Solved" (I believe that's what it's called in America)
Kareshi Kanojo no Jijou/"Kare Kano"
Initial D (Three seasons worth and a movie)
Samurai Champloo
Beck