Star Trek T.G.

There was an episode "TURNAROUND INTRUDER" where a woman [Janice Lester] scientist from Captain Kirk's past has found an alien device that can transfer minds between bodies.

She lures the Enterprise to where she is and forces a switch upon Kirk that luckily is seen through when the new Kirk acts totally insane.

Luckily for Kirk, the transfer does not last. Unless I am mistaken, that is the very first T.G. story ever published.

Them there was the short story "THE PROCUSTEAN PRETARD" where a planets technology actually changes your gender/sex.

On the planet is the entire crew of a Klingon ship {Kang is Captain. The interesting thing is that the ALPHA MALE is made even more male by adding an extra chromozone making him XXX.

They leave and then return so that they are returned to normal. By the way, a typical Klingon crew is all male.

Does anybody know of any others?