Remember that time when Zack and Cody met That's so Raven, when C-3PO appeared on Sesame Street, when Spider-Man met the cast of Jessie, or when Urkel visited Full House, well they all exist in the same universe, hard to believe, but it's true, and that's what were gonna watch, every cameo, and appearance, and every crossover in what is called "The Tommy Westphall Universe", this is The Crossover Nexus