11. Eddie Murphy (never)
He bailed right before the 2012 ceremony, which means he deprived us of the joy of watching him bail during the ceremony. I mean, he's the guy who got nominated for Best Supporting Actor, came unglued when he didn't win, and so walked out in the middle of the show. It would have been a blast to see him stomp off the Oscars. ("Wait, they didn't nominate me for Sound Mixing?") But alas, he threw his I'm-outta-here tantrum with a couple months notice, giving them time to call Billy Crystal again. Yeah, thanks for that, Eddie.