I have the most distinct memory of before the SpongeBob episode "20,000 Patties Under The Sea" came out, they ran a promo sneak peek of the episode like they normally do, but there was this actress that had to have been from Nickelodeon stepping forward onto the screen from outside the window (pic related.) I'm serious. This is not a troll thread or anything. I think about it every so often and it bugs me how specific it was for it to have never happened.
I actually remembered this. Was this promo made to tease the Superstuffed Nicktoons Weekend event? I might've remembered it being shown in September or October of 2007, prior to the November 23 premiere. I believe the promo was shown with the Avatar Book 3 premiere if I recall. That or during the premiere of a movie or something like that.