The first DBZ game on Playstation 2 was amazing! People often say that the later games were much better, and while that is objectionably true, I love everything that this game did right! It had scenes directly from the anime re-done in cg! You could literally pick up this game without any prior knowledge of the show and enjoy it!
While the game only goes up until the Cell saga, it is still incredible! Budokai 1 & 3 were re-released in HD on Xbox 360 and Playstation 3, so while you will surely pick it up and play Budokai 3, please please PLEASE play Budokai 1 eventually!