Hmmm, I think there's another topic just like this! Check out the Art & Music category! Anyway, for me, it's Naruto, Naruto Shippuuden, Dragon Ball and some others. :P
Ahh, anime. There are some unbeatable films. My favourite are Ghost in the shell, Naussica and of course NERV. I think that these film have really special storylines.
Well now there's so much Anime going around that it is allmost impossible to decied. I think it depends on what you were hooked to(your first anime) A few of my favurite : -DB series !!! -Naruto -Bleach -Fate stay night -Fullmetal Allchemist (hope i wrote it right) and more...
P.S : I think that alot of the anime series have taken elements from what i beleive to be one of the greatest anime there is : DB - again a personal opinion and maybe a useless one...