I'm more of a historian on bodybuilding. Not many guys can go toe-to-toe with me on that subject. I'm pretty much all the way back from Sandow to Heath (and everyone in between)
Same with the UFC... 
I recorded the first 40 fights on VHS long before anyone knew anything about the UFC. Now? I'm kind of out of the loop. I lost interest after my buddy Lidell got his ass whooped for the last time. 
I do still like Weidman though. Maybe GSP also. 
Richard Perez is one of my best friends, but I don't really dig his fighter too much. Richard works out at my gym. 
I'm pretty sure Nick Diaz stays home and plays with his bongs.