Brian Levant Director Mark Addy Fred Flintstone Actor Stephen Baldwin Barney Rubble Actor Kristen Johnston Wilma Slaghoople Actor Jane Krakowski Betty O'Shale Actor Thomas Gibson Chip Rockefeller Actor Joan Collins Pearl Slaghoople Actor Alan Cumming Gazoo, Mick Jagged Actor Harvey Korman Colonel Slaghoople Actor Alex Meneses Roxie Actor Jack Taylor Keith Rockhard Actor Rosie O'Donnell Octopus Masseuse Actor William Hanna Writer, Executive Producer Joseph Barbera Writer, Executive Producer Deborah Kaplan Writer Harry Elfont Writer Jim Cash Writer Jack Epps Jr. Writer Bart Brown Co-Producer Bruce Cohen Producer Dennis E Jones Co-Executive Producer Steven Spielberg Executive Producer David Newman Original Music Jamie Anderson Cinematographer Kent Beyda Film Editing Christopher Burian-Mohr Production Design Brad Ricker Art Director Jan Pascale Set Decoration Robert Turturice Costume Design Joseph Middleton Casting