#2 Umaga and Steve-O (WWE RAW, 2006)
Back in 2006, Monday Night RAW took place in Los Angeles and the theme of the episode was 'RAW goes Hollywood'. One of the guests for the show included Jackass star Steve-O. Of course, being the adrenaline junkie that he is, Steve-O wanted to get into a WWE ring but got more than he bargained for when he was put up against Umaga.
The beatdown ended with a top rope splash from Umaga, but while other WWE stars then stay down and sell the move, Steve-O continued to move around. Umaga wasn't too pleased with Steve-O 'no-selling' his move.
The former Champion was then forced to legitimately go over and deliver a number of blows to the star in order to stop him from moving around in the ring. Steve-O then later publicly claimed that he had suffered a concussion after being in the ring with the Samoan Bulldozer.
There were reportedly plans for The Jackass Crew to take on The Samoan in a handicap match at SummerSlam, but after this beat down, all of those plans were nixed.
Major rumor about recently released stars HERE