Mel Gibson isn't too happy he got axed from the Hangover 2. In fact, sources say he's "furious" at producers. "He doesn't understand why Mike Tyson, a drug user who turned his life around, was given a chance while Mel was kicked to the curb. Everybody deserves a second chance," said one. We're guessing Liam Neeson-as-replacement isn't doing much to smooth the situation. Neeson's agent issued a statement poking at the debacle, saying the actor would replace Gibson "pending clearance of cast and crew background check," reports the New York Post. Click here for more.