The producers of The Hangover Part II must be regretting their decision to have a high-profile cameo. The sequel to the comedy hit originally had Mel Gibson slated for the part, but Gibson's scandals caused him to be dropped from the project. Liam Neeson then filmed a cameo but it was decided that additional shooting needed to be done. However, Neeson was already filming the sequel to Clash of the Titans and couldn't comply. Thus, his role has been cut and has been recast with Nick Cassavetes. For more click here