Jesse Metcalfe Knocked on His Ass!!

2/8/2008 1:17 PM PST
Former "Desperate Housewives" star Jesse Metcalfe took a crushing right hook to the face last night -- and the whole thing was caught on tape!

It all went down outside the Nicole Khristine Jewelry launch at Boulevard 3 nightclub, after Jesse allegedly said something that pissed off a musclebound friend of actress Taryn Manning. The guy suddenly unleashed a ferocious blow that sent Metcalfe crumbling to the floor.

After the "fight," a stunned Metcalfe tried to go after the guy, but was restrained by security. Too little, too late guys.