Mostly Ghostly is a 2008 American horror comedy fantasy film directed by Rich Correll. The film is based on the first book, Who Let the Ghosts Out? by R. L. Stine and the first installment of the Mostly Ghostly film series. It was released on September 30, 2008 on DVD, and was broadcast on Disney Channel on October 31, 2008.

David Dominick DeLuise is an American actor and television director. He has had roles in numerous films and television shows. He is best known for playing Coop on Megas XLR and Jerry Russo on Wizards of Waverly Place.