I've only seen TUF2 and that was alright. Von Flue was my favorite by far because he was hilarious. Funniest thing he did during the show was when he was checking out his cut in the mirror and gave a couple middle fingers to it.
I was dissappointed that Melvin didn't go far. I reckon he could've been an interesting personality on the show, but for some reason he didn't give the fight 100% like he does these days and the days prior to the TUF2.