12-15, I was pretty anime obsessed.
Now the only anime I can get into are... Cowboy Bebop, FLCL, Akira (amazing movie), Trigun, and Fullmetal Alchemist: Brotherhood.
If I were to list all of the ones I've been into... man... Inuyasha, Crayon Shin-Chan, Case Closed, Dragonball, DBZ, DBGT, Fullmetal Alchemist (the first), Serial Experiments Lain, Hellsing, Pokemon, Yu Yu Hakusho, Death Note (a bit), some Naruto... basically every popular anime. Some more obscure ones that I can't remember.
These days, if it's anything other than Bebop, FLCL, Akira, Trigun, or Brotherhood, I don't care for it.
I'll note that it's very interesting how anime has changed in the US. Ten years ago, Pokemon was still the shit, and everyone was into Dragonball... then for the mid-00s, anime became a cliché for 14 year olds, and towards 2007 and on, anime is popular with pretty much everyone. It's weird how that works.