Clint Howard has played several characters in the "Star Trek" franchise, but "Deep Space Nine" fans know him as Grady. Howard brings some comic relief to the episode, but did you know that his part was originally written for Iggy Pop? "I'd been trying to cast Iggy for years, twice when I was working on 'Fame,' and then on 'DS9.' Howard's small role on "Star Trek: Deep Space Nine" allowed him to join Charles Napier, Charlie Brill, and William Schallert among the class of actors who have guest starred on both "Star Trek: The Original Series" and "Deep Space Nine." Don't worry, though, Iggy Pop still got his chance to join the "Deep Space Nine" cast for a later episode, so everyone got to shine in the end.