For a few months there was a show on the CW (or WB) called Summerland. It was about Aunt Becky from Full House and her new group of child foundlings. Her "son" dates a character played by Sarah Paxton, but at the time I distinctly remember seeing her and thinking "Rory?! You bleached your hair just to guest star on Summerland?! RORY, COME ON!"
This would be another fun good vs. evil matchup of casting. They would play two sides of some CW coin I guess.