The main characters from the sitcom "The Big Bang Theory", especially Sheldon Cooper, make various references to and are big fans of "Star Trek", with Sheldon even citing Starfleet regulations during an argument in one episode and the main characters dressing up as Data, Worf, Captain Picard and a Borg drone, respectively, in another. Also the series features Wil Wheaton in a recurring role as a fictionalized version of himself plus guest appearances from Brent Spiner and LeVar Burton, and a voice-only cameo from Leonard Nimoy, who voices a Mr. Spock action figure talking to Sheldon in his dreams. There was also an appearance of a Gorn in one episode.