George Takei, the actor who played Hikaru Sulu on Star Trek, loved the episode titled "The Naked Time." In that episode, many Enterprise crew members became mentally unstable. Sulu expressed his madness by stripping off his shirt and running around the ship with a rapier.
Takei visited the set of The Today Show. With a sword in hand, he relived that moment from 48 years ago. He kept his shirt on, though.