It's a sensitive subject that will always create debate and controversy. Realistically, I think it comes down to whether or not you're a fan of the fighters involved. I personally find it amusing when other fighters begin to clown and showboat. I love watching Anderson and Diaz for those reasons, it's entertainment. I know some will agree and some won't. Who are your most loved and most hated clowners and showboaters in MMA? For boxing fans, hard not to love some Prince Naseem
http://www.youtube.com/watch?v=lLXcgZ84ndk
Rashad, but only cause he does the stanky leg shortly thereafter. 
frank vs baroni was good
Diaz when he slapped kj's hand and imediatly started talking shit makes me laugh everytime
Randy spanking Tito was one of the best moments in the UFC.
Gnarly219 - Rashad, but only cause he does the stanky leg shortly thereafter
Nate Diaz triangle of pelligrino was awesome 
Nick Diaz purposely hitting his forehead against BJ Penn's jab....Also when the Diaz Bros throw jabs and straights then taunt then keep on throwing....Rashad on TUF was TOO FUNNY lol! Randy vs Tito, and the list goes on....
Dead Again -WestBuiltAMountain - Thiago playing bongos on Vera's back is one of the highlights of his career.
Not after he pissed hot.
I love clowning.
yhknq - so according to the ug
clowning your opponent is an acceptable practice and even praise worthy
but jon jones gets the cocky arrogant label
lol good point
I take more issue with the disrespect outside the cage, or in it before/after the fight.
Once in the cage, "clowing" can be a very useful strategic element to how fighters fight. Now if it is something that looks bad for the sport (like Hashad grabbing his cock...) that is different.
Andersons air guitar was pretty intense
when anderson puts his hands down and sticks his face out just takes balls. and he starts doing the matrxi shit you are just like wtf
Love it
Anderson vs Forrest