Because sometimes you just want to turn a fool’s lights out while your buddy films it. Enjoy!
List from cagepotato, some great sucker-punch knockouts and brawls so i suggest checking it out

All videos after the jump
LINK The video in the #2 spot has been removed, so here it is
LINk Which lol is my favorite one, "look at my face" than BAM dude from behind puts him down

...not to mention that was a horrible shot, hit him with like his forearm.
And How about #3!!! Little asian woman trying to break up the fight gets sucker punched by a guy from behing, WTF!!