The morning after the Steel Dragon concert at the start of the film, Chris wakes up to a police officer searching his bedroom. Chris tackles the cop to the ground and they begin to struggle, when the cop suddenly starts yelling for their mother, who rushes in and breaks up the fight. It's an absolutely hilarious way of introducing Chris' brother.
Chris' shocked reaction when Bobby Beers tells him that he's gay. Chris' reaction is similar to how a lot of heavy metal fans reacted when Rob Halford came out of the closet.
One of the members of Steel Dragon enters a hotel room in a rage and begins smashing everything in sight (culminating in him throwing a television set out the window). Chris asks Kurt what's wrong, and Kurt replies "His wife just ran off with Peter Gabriel."