Star Trek has always done a great job of showing fans the best of sci-fi. They've always been able to take a trope and expand upon it to a shockingly high degree. They've done some amazing work with amazing concepts. Yet, one that I'd like to see more of is the body-swap episode.

The thought came to me seeing the ads play for the upcoming "Ghostmas" special from the CBS series 'Ghost'. In the trailer, the two main characters seemingly swap places with two ghosts. A simple and effective concept that Star Trek has done very well with.

They've had a handful of body-swap episodes, with the most recent being Strange New Worlds' "Spock Amok", which did a wonderful job with the plot device, but it could've been better. The key to the body-swap gimmick is finding two distinctly different characters who move, sound, and behave differently and...