15 Great Movies Starring Star Trek Actors
10. Ghost - Whoopi Goldberg (Guinan)

The EGOT honouree was already an Oscar nominee for her performance in Steven Spielberg's The Color Purple before she was beamed up for service as a long-term Trekkie, but it's her Academy Award-winning performance in the romantic fantasy - about a murdered man whose spirit must work with a psychic to save his lover from a similar fate - that stands out from the crowd.
As the medium Oda Mae Brown - who discovers she actually has a psychic gift, having been working as a charlatan before the deceased Patrick Swayze - Goldberg elevates what could often be a sentimental, syrupy and supernatural love story into something more affecting, despite playing neither lead role. It's a career highlight for her and arguably the genre itself.