Pokemon Indigo League, Dragon Ball Z, Beyblade, Yu-Gi-Oh... but more like stray episodes here and there when nothing better was on =P
Watched them on the TV. Also saw some Gundam and Transformers iirc
Everything else that comes to mind; I was either a teenager, like for example Avatar, or is stuff I watched even later when I started watching the stuff online, such as Hunter x Hunter, Gintama, One Piece etc...
What''s your favorite videogame?