It's going to be hard to top Soukamthath vs O'Malley, but I think one that gets forgotten is Michel Prazeres vs Ismael Naurdiev. Prazeres managed to take Naurdiev down three times in that fight (once each round). But after each takedown, he attempted to mount Naurdiev, and got bridged the exact same way as he tried to mount each time. It reminded me of another fight in the UFC: Matt Arroyo vs Dan Cramer. At least twice in the fight Arroyo took Cramer down, took Cramer's back, and then ended up on the bottom for the majority of the round. Despite not succeeding in the UFC, Arroyo still corners a ton of guys.