Dragon Ball: Advance Adventure is a really fun game. It's a platformer where you play as Goku from the beginning of the Dragon Ball series to the end of the King Piccolo Arc. All of Goku's trademark abilities are present, and grow more powerful over the course of the game. And, once you've finished the storyline, you unlock the ability to play as other characters, like Krillin, Master Roshi, Yamcha, Tienshinhan and Tao Pai Pai (bear in mind, this was back when Roshi was still the strongest man on Earth, so playing as these characters instead of Goku actually doesn't suck).
Normally, I'd say it's not for people who aren't fans of the series, but even if you're not really into Dragon Ball, it's a very solid title, and definitely worth checking out.