They're showing the game again starting right now (8pm PST on Thursday) on Comcast CA if anyone wants to watch it again or missed it!
It sounds like a fairly generic two-bar riff to me. The rhythm is similar to that of Rock Anthem but I don't think it's the same.
You're right now that I hear it again. It sounds like a song I've heard a lot but don't know the name/artist. I can hear the chorus in my head but can't figure it out. As soon as they invent a Voxer for the brain I'll be happy.