I registered just so I could discuss this episode - specifically the Go Sports Go music video. It's a parody of the Break a Sweat video that Jessie, Kelly, and Lisa did on Saved by the Bell. There were other references I wasn't sure of, but this is the main one.
I couldn't find a better video, and I'm not really sure how to post, but hopefully this works (sorry if I screw it up!):
https://www.youtube.com/watch?v=JnL3th4ja30