it was funny and i laughed. and i made a mistake and i own it. it's like all of a sudden people are like, i like that guy. he's kind of a dork like me. >> stop laughing, all right? man. >> from a slip of the tongue to a slip on the floor makes a hot hollywood actress and a favorite late night talk show host in a playful sketch and what go you get, big ratings, right? well, for conan o'brien, teri hatcher's appearance on his show in october of 2009 really knocks him out. it starts when hatcher suggests she and o'brien do a mock triathlon o together. >> it was supposed to end with teri racing into the studio, rushing down the steps and coming right here to the finish line. >> but watch what happens when the two approach the stage for the big finish. >> and i'm a big guy. i'm a big guy, i'm about 6'4" and i went back and hit my head.