Episode 120 of "Sabrina, the teenage witch"
s06e01 Really Big Season Opener

Sabrina and Miles (Trevor Lissauer) decide to team up for the production of a student horror film that includes a bloodsucking vampire, gloomy cheerleaders and a helpless maiden. But their quest for the perfect cast leads them to one performer (Sisqo) who seems to play his role a little too well. Meanwhile, Hilda and Zelda are summoned to the Other Realm for Scare Duty---the witch equivalent of jury duty---to teach the younger generation how to be more frightening. Unfortunately, the kids aren't reacting to their old-school methods, so they have to formulate a plan to update their spookiness Miles wants to direct a student film and has enlisted Sabrina's help. As producer and cheerleader #2, she is involved in casting the other roles in the vampire horror film. Hilda and Zelda want parts in Miles' film until they get a notice for "scare duty," the other realm's version of jury duty. Every few hundred years they must teach a class on how to be scary. If they can get the students to learn everything in one session, they don't have to teach scare class ever again.Sabrina and Miles can't find the perfect vampire for the film so Sabrina puts out an ad. Vladimir Kortensky (guest star Sisqo) shows up and is absolutely perfect for the part. Too perfect. Sabrina gets suspicious and logs on to the witch wide web, finding out that Vladimir is a real vampire, and despite his acting resume, is after her friends' blood!Sabrina corners Vlad and fights him, Matrix-inspired moves and all. She finally manages to stake him. Meanwhile the aunts aren't being very scary in the other realm. After the students pelt them with spitwads they get so angry they turn into genuinely scary monsters... frightening the class and gaining freedom from scare duty. They show up to Sabrina's movie set in time for Hilda to step in as Vlad.