5 for me. What BJ Penn does and says is pretty funny throughout. Great fighters on it that still are in the UFC today like Maynard, Lauzon, Wiman, Diaz, Gamburyan, and Miller, and the rest is filled with hilarious characters like Wang being a warrior, Ruediger's obvious issue, Marlon Sims talking about how badass he is in streetfights, and then a few get kicked off but i don't wanna spoil it too much.
Season 1, Its the only one I got on DvD
It was a great season though and it was very pure. Other than that when I see Liddell vs Ortiz, and Mir Vs Noguira i think they will be pretty awesome.