Jon Hamm on "Conan"

When “Mad Men” star Jon Hamm, who plays Don Draper on the AMC series, appeared on Conan O’Brien’s new TBS late-night talk show on Nov. 10 (click on “Clips” then “Celebs”), he revealed that Sterling Cooper Draper Pryce is a dangerous place to work.  “I have gone to the hospital twice. The first season, a piece of the set fell on my head … to be fair it was pretty funny,” Hamm told O’Brien, noting that he needed seven stitches to close the wound. In the second season, Hamm broke his hand during rehearsal of a war flashback and then separated his shoulder during shooting. Afterward, during a scene in which Draper promotes Peggy Olson to copywriter, the scene called for actress Elizabeth Moss to shake his hand. “I warned her that my hand was physically broken and remarkably painful,” Hamm recalled, asking the actress snot to squeeze it. “She apparently thought I was kidding and, when we actually shot it, gave me the full-on ‘congratulations’ handshake… I shrieked like a girl, hit my knees – she was mortified – and it was the most painful experience I’ve ever gone through in my life.”