Yesterday, The Power T had an excellent post comparing and contrasting video of Tennessee's pre-game with that of Cal's.
A possible explanation: SB Nation Cal blog The Band is Out on the Field is filled not with excitement, but with "excitement's ugly stepchild: anxiousness." Is what you hear on that video of Cal's pre-game anxiety or apathy? We post, you decide.
In case you didn't know, The Band is Out on the Field gets its name from The Play, which proves that things can get loud in Berkeley, provided that something extraordinary happens: