Broly: To get the Legendary Super Saiya-jin, on your second time through as goku, before fighting buu as vegito, go to where you see buu absorbing gohan, after the cutscene, DON'T GO ANYWHERE, and look for a '???', and you'll talk to hercule, then, go to the desert, and you'll have a cutscene with tien, then look at the desert again, and talk to supreme kai, then go fight buu, and defeat him, then, insted of fighting kid buu, you'll fight broly insted, and after that, you'll get a chance to unlock SSJ Gogeta (goku, fusion) for goku!.