Another one of those US things, calling their own things 'pro sports' and the rest apparently 'something else' I watch a boatload of pro sports: athletics, cycling, biathlon, alpine skiing, F1, you name it. Also, highlights of NHL, NBA and NFL (not MLB unless it's the play-offs).
Your videos remind me that it does seem to be better in college sports, or maybe in American football in general (I don't often hear that monotonous "Let's go xx!" buzzing around there). It's not much of a chant, more just an entry, but I do like the Enter Sandman one of Virginia Tech