This is a scene from the Cell Games saga of DBZ. The moment in which Gohan defeats Cell. This is from the "Orange brick" DVD release and has the Japanese music, which I find much more compelling. Although I do like Bruce Faulconer's Super Saiyan Vegeta theme.
I do not own this clip. Dragon Ball Z is property of FUNimation, Toei Animation and Fuji TV and Akira Toriyama. I am just a fan.
I have added a longer, slightly louder version: • Gohan Defeats Cell (Japanese BGM)