 On the condition the film would have its premiere in Baltimore, Carson agreed to a cameo appearance as "head surgeon" in the 2003 Farrelly brothers' comedy "Stuck on You", starring Matt Damon and Greg Kinnear as conjoined twins who, unhappy after their surgical separation, continue life attached to each other by Velcro.In March 2013, Carson announced he would retire as a surgeon, saying he would "much rather quit when I'm at the top of my game".His retirement became official on July 1, 2013.