I've only seen it on HDnet, so I don't know exactly where it plays other than on that channel, if anywhere.
But pretty much it's Lecavalier and Richards playing a hockey game on XBOX360 it looks like, and Lecavalier keeps scoring. Richards keeps going "It's a glitch" and Lecavalier says "It's not a glitch". They go back and forth a few times and finally Richards puts his controller down, slaps the controller from Vinny's hands and walks away. It was great.
I haven't been able to find a video, but I'll take a crap quality video next time it's on.