Rewatching the Bisping v. Rivera fight on UFC Unleashed -- the first time since I watched it live -- and there's no doubt in my mind that the knee Bisping threw to an obviously downed Rivera in round 1 was flagrant. Under the Unified Rules, Marc Goddard could have stopped the fight and DQ'd Bisping.
To me this was WAY worse than the elbows for which Mazzagatti DQ'd Jon Jones against Matt Hammill. Jones's elbow -- while definitely illegal strikes -- happend in the natural flow of combat which is not condonable, but at least understandable.
Bisping's knee was an initial strike. He paused, looked and still struck. To me that's the definition of flagrant. He knew precisely what he was doing.
Can you think of any other good or bad MMA DQ's?