http://www.ultimateshowdown.org/ This is probably one of the most entertaining things i have ever seen.
Omg.. i remember watching that 1 year ago.. I thought it was really entertaining. xD But then after awhile it kinda got boring. And some of my classmates are SOOO annoying, they just KEEP on talking about it again, and again, and again..
I would post it but I think its a bit inappropriate but theres a spoof on New Grounds called Ultimate Orgy of Homosexuality, pretty funny too ;P
Yeh i remember watching that quite a while ago, such a good flash and the tune is so catchy. There are loads of parodies of it though...