What Cartoon Show is this?

I think it was on Nickelodeon, I remember there was this episode (or maybe a TV movie or something) where the main characters get lost and they end up at the house of this really rich guy who is obsessed with the Green Bay Packers but they wont let him buy the team. They watch some highlights and stuff but in the end I think it turns out that the guy is evil or whatever, but I can't remember what show it is!