http://youtube.com/watch?v=ls3ykn5ZTWA&feature=related
You've got to admit, if you're a DBZ it will give you goosbumps it's that good! Honestly, it's legendary. Goku turns Super s...... :)
Credit to LucidWalker for showing me this.
Edit - Yeah, I don't know if that's the original (which is the best one, because of the music too)