The best ones are the ones by Legendary Frog, the Chcobo robo voice remix and the Final Fantasy 7:about random battles (there is also a cool game on random battles and if you pass certain levels, you can unlock great ff shorts) Also check out all his other Flash heres a link to the site www.legendaryfrog.com
I have seen the Big brother Final Fantasy, Its so funny, I hope the creator makes another one!