1) Fresh in my memory, the Cain/Bigfoot fight. Horrible stoppage IMO, Doctor was complete fool letting fight continue as Bigfoot was having extreme difficulties seeing. Stevie Wonder couldve done a better job.
2) Jon Jones choking Machida out cold and dropping his ass like a sack of potatoes. No respect whatsoever, and the fact that douchebag GJ was yelling "check on machida, get some fans" made is even worse.
3) Shinya Aoki breaking Mizuto Hirotas arm and then flipping him the bird.
Honourable mention goes to Babalu for holding a choke after the ref had called a stop to the fight.
Have at it maniacs