'Finding Dory,' the sequel to the Pixar hit 'Finding Nemo,' was featured during this year's D23 Expo in California. While no new footage was offered, as production has only just begun, director Andrew Stanton and producer Lindsey Collins revealed some of the new cast members in the film, as well as a few interesting plot details.
Though it arguably started with Rob Reiner's 'This is Spinal Tap,' the mock-documentary comedy got a shot in the arm when 'Tap' co-star Christopher Guest used it again when he co-wrote and directed 1996's 'Waiting for Guffman.' Such led to three films that used the same style and much of the same cast . That format eventually took hold in television, and - as 'Guffman' co-writer Eugene Levy has recently said - it's so prevalent that they have no plans to make another.