Sequel: Farscape: The Movie, 2061: Odyssey Three (adapted from the novel, 3001: The Final Odyssey (adapted from the novel), The Breakfast Club II (having the members of the group meet up after having not seen each other for years, showing if things changed for them or if they're futures were as they called it in the first film), Ferris Bueller's Day Off 2: Father and Son Day (Ferris decides to take his son out of school for the day as a means of educating him on how to enjoy life a little), Wicked City II and Wicked City III (sequels to the anime, adaptations of Books II and III in the series).
Prequel: Bubba Nosferatu (the prequel to Bubba Ho-Tep)
That's about all I can think of.