7x19 - Dragon Ball Z: Dragon Box

Using the power of the Potara earrings, Goku and Vegeta merge together at last! The most powerful man in the universe, the ultimate warrior, Vegetto, is thus created! Boo launches an innumerable amount of energy blasts at him, but Vegetto's power is by far greater, and he deflects them all. But then, in order to utterly pound on Boo, Vegetto transforms to become Super Vegetto!