Posted April 29, 2009, 5:12 PM EDT
News about Julia Roberts's salty language at the Film Society of Lincoln Center's event honoring Tom Hanks in New York on Monday night reminded us of a story we did last year about M.C.s behaving badly. The Pretty Woman star didn't seem to ruffle too many feathers, but it's worth remembering that speakers who offend guests—celebrities or not—can cause serious problems and derail an entire event. (The folks at the society would probably prefer this week's coverage had a different focus.) Our story has tips for preventing talent from going off-book and out of bounds: It's here.