>>86968654Scooby Doo on Zombie Island is the only one I consider a must see. It is arguably the best thing to come from the franchise.
I like Witch's Ghost, Reluctant Werewolf, Boo Brothers, Ghoul School, Alien Invaders, Goes Hollywood
I know it's bad, but I have way too fond memories, Camp Scare, The WWE crossovers, The KISS crossover, the Blue Falcon one, and generally most of the direct to DVD films from the past 8 or so years.
The only one i've seen that I hated were the live action ones and the arabian nights one. But I love the franchise.