Star Trek
Dorn's most famous role to date is that of the Klingon Starfleet officer Lieutenant J.G. (later Lieutenant and then Lt. Commander) Worf in Star Trek: The Next Generation and Star Trek: Deep Space Nine. He said he got the role by showing up at the interview with several people. He did not smile or speak or sit, but stood in a corner in rigid attention posture, like the stereotypical Klingon warrior. When called, he marched into the room, scowled, and shook the interviewer's hand sharply. After reading, he gruffly thanked the director, and walked out. He attributes this reading in character as a Klingon warrior to getting the part.
Dorn has appeared on-screen in more Star Trek episodes and movies as the same character than anyone else: he appeared in 175 episodes of Star Trek: The Next Generation, missing three: "Code of Honor", "Haven" and "Shades of Gray," 102 episodes of Deep Space Nine, missing four during his time on the show: "Rocks and Shoals", "The Magnificent Ferengi", "Chrysalis" and "Prodigal Daughter" and he also appeared in five Star Trek movies, bringing his total to 281 appearances as Worf. Colm Meaney is the only other person who has made over 200 appearances on Star Trek with 216 episodes; Majel Barrett had 233 "appearances" but many of these were voice only.
Dorn's appearance in the film Star Trek VI: The Undiscovered Country was as Colonel Worf, representing Captain James T. Kirk and Dr. Leonard McCoy at their trial on Qo'noS and also unmasked the real assassin: Colonel West. Although never confirmed on screen, the character of Colonel Worf was intended to be the grandfather of Star Trek: The Next Generation's Worf.
Dorn is also one of six actors (the other actors being Jonathan Frakes, Kate Mulgrew, George Takei, Avery Brooks and Majel Barrett) to lend his voice to Star Trek: Captain's Chair, reprising his role of Lieutenant Commander Worf.
Dorn's voice deepened from his years of playing Worf. His two favorite episodes of The Next Generation are "The Offspring" and "The Drumhead".
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