Brandon Michael Vayda, who plays Mike on the new 90210 was involved in a vicious street brawl in Los Angeles Saturday Night.
According to reports, Vayda was having some drinks with friends when his group got into a verbal stoush with another group at the My House Nightclub.
The argument switched outside where a few punches were exchanged, followed by the other group attempting to leave in a taxi. Vayda then flipped out and begun laying into members of the group with fists flying, attempting to drag one of them out of the cab to continue the beating.
There have been no arrests so far, but the whole thing was caught on tape. TMZ has the footage here.