Warning: This post contains spoilers for the “Battle at the Binary Stars” episode of Star Trek: Discovery.

Farewell Captain Georgiou, we hardly knew ye. Introduced as one of the stars of Star Trek: Discovery in the show’s maiden voyage — which premiered Sept. 24 to a love it or hate it response — Michelle Yeoh’s shocking death at the end of the second hour, “Battle of the Binary Stars,” bumps her down to cameo status. But the actress and action movie icon is in good company in that regard. After all, the various Trek TV shows have a long history of memorable episodic appearances by current and future stars. Click through the above slideshow to refresh your memory about some of the many famous faces that have visited the franchise’s final frontier over the course of the past five decades.

New episodes of Star Trek: Discovery premiere Sundays at 8:30 p.m. on CBS All Access.