The Original: 2002's live-action adaptation of the Scooby-Doo cartoon was, despite negative reviews, a box office smash hit, leading to 2004's sequel, Monsters Unleashed, which couldn't recapture the same box office glory and additionally won a Razzie award for Worst Sequel or Remake. The more modest returns of the sequel put the kibosh on plans for a third film, causing the property to stick to what it did best: TV cartoons. Time Since The Last Movie: 10 years, 7 months The Reboot: Over the summer, Warner Bros. announced that they were in the early stages of rebooting the live-action film series, presumably without Freddie Prinze Jr, Sarah Michelle Gellar, Matthew Lillard or Linda Cardellini, and more than likely featuring a new cast of young, up-and-coming actors. While barely a decade seems like little time to leave between franchises, the further down this list you go, 10 years and 7 months is going to seem like a perfectly reasonable wait period to restart a flagging movie series...