Ninja Scroll & Fist of the North Star were some of my favs...but now it's mostly reading the manga if the anime isn't fast enough...some of the few I have watched and loved:
Hajime No Ippo (First Step)
Full Metal Alchemist
Naruto
Samurai Champloo --Hence the name "Mugen"
Inuyasha (sp)
Ranma 1/2
I'm not as into them as I used to be but I still watch some on my younger brother's recommendation.
The anime pass sounds like fun but I usually only carry *backup* copies.