Naruto was really good, until after the Naruto vs Gaara fight. After that, it devolved into what felt like Dragon Ball Z redux. Plus, you can't help but notice how patently ridiculous it is to be a ninja running around in a bright orange jumpsuit.
Gundam Seed was also fairly interesting, not for the big physics defying giant robot fetish, but because of how fucked up emotionally some of the characters were.
Also, Ranma is simultaneously mind-numbingly horrific and gut-wrenchingly hilarious. I love it.