If you really want to fire up a football crowd you need a football person, period. There are several different generations of people with many different interests attending a football game.
Example of why a lot of the suggestions here wouldn't be the best choice if you want everyone involved: I have never heard of Macklemore, I hate soccer so anyone involved in that would make me sleepy, baseball doesn't interest very many people at all anymore, basketball just isn't my sport.
I know you may say that is just me, but there a lot of people who are rabid football fans like myself, who are also in the stadium and just do not care about any of those people. It really does need to be a person from the team who they are rooting for to get everyone, not just one group excited.