Back in December of 2010, I went to an event in Beverly Hills: Dick Cavett interviewing Mel Brooks. It was supposed to be a promotion for Mr. Cavett's new book but it was really just Cavett (and us out in the audience) enjoying about 90 minutes of Mel's anecdotes. Here's a story from that night. Ignore the silly opening with Wink Martindale. Better still, ignore everything you ever see with Wink Martindale…