So Clay Matthews participated in a Wisconsin taping of WWE Smackdown last night. This does not surprise you at all; in fact, nothing about Matthews ever does. Of course he insured his hair, quotes Lord of the Rings, and does Hulk Hogan poses and creative P90X squats to celebrate sacks.
No clue what all is going on there, and I'm absolutely not about to look up the answers. But it appears the match's actual referee was late in arriving to the ring, so Matthews was called on to do the counting because he went to USC. He does a really great job of it, then calls up what appear to be Green Bay Packers teammates as the crowd breaks into "Go Pack go!" chants.
The one fact I do know about what you just watched: the loser of that match is named Dolph Ziggler. Dolph Ziggler! Just like Clay Matthews, nothing about pro wrestling is ever surprising.