Well, I have watched very few Animes - but loved all of them. I recommand you watching:
1. DBZ (the one and almighty
)
2. Akira - excellent movie in my opinion.
3. Shinzo
I thought Shaman King and Pokemon (lol) were really nice. Pokemon and Yu-Gi-Ho and DBZ were one of these serieses I saw as a child (6-13) and loved every minute of.