"I was forced to lose weight for this movie," he said. When David Letterman asked who made him do it, Segel laughed: "the studio president!" That would be Universal President Ron Meyer.
So, how much did he drop? "A good 35 lbs," Segel said. Not easy when you're playing a chef and have to eat on-screen, but the studio provided him with a personal trainer on-set who monitored his diet and exercise.
However, Segel said, he managed to cheat on his regime by eating extra mouthfuls during takes.
"The Five-Year Engagement" is in theaters Friday, April 27. "Late Show With David Letterman" airs weeknights, 11:35 p.m. ET on CBS.
TV Replay scours the vast television landscape to find the most interesting, amusing, and, on a good day, amazing moments, and delivers them right to your browser.