Starting off first....
Kimbo making a brief appearance in the UFC's notoriously thin heavyweight divsion...
i am not sure which organization this is from, but i thought the stoppage was a little early...
Dave Kaplan KTFO in the TUF house
and then there is this guy (my all time fav fighter)
WEC never die - Njoukani kicking hododeck i believe
Faber vs Brown at WEC 36
our old friend chuck
McCarthy getting to full mount with ease
not sure if they got Tito's head big enough in this one
Brendan schaub giving up his ghost
Henderson - Bisping Mortal Kombat Finish
there are a bunch more, but this is already going to take long enough to fully load and play (i don't know how to better put gif's in) and a lot that i forgot or didn't take the time to find. if you have some personal favorites put 'em up in the comments.
i apologize for not giving the best accreditation, its late and i found some pretty at random.