8, 1966, and made almost immediate stars of its main cast members like William Shatner and Leonard ... well as for a cameo in the 1987 series premiere of Star Trek: The Next Generation (TNG).

Best known for popularizing the character of Spock, Nimoy ... cameo in which he gave Sheldon (Jim Parsons) advice in the form of a tiny Spock action figure. In the season 5 episode, Sheldon and ...

William Shatner, Leonard Nimoy and DeForest Kelley pictured in their costumes on the set of the classic 1960s Gene Roddenberry TV series Star Trek. And, no, they're not wearing their costumes ...