To promote I Now Pronounce You Chuck and Larry, Adam Sandler guest starred on his co-star's sitcom The King of Queens. The result was a rare occurrence with Sandler actually producing some real laughs, with very few missed jokes. The bit about the lemon lime soda not working with the principal who enjoys ginger ale was great.
Unfortunately the B storyline with Carrie was absolutely brutal, and even Arthur could not save it. Leah Remini was insufferable in the final few seasons of the show, and you have to wonder if it got to the point where they seriously considered replacing her. It would have been a good move.