Star Wars Jedi Knight: Jedi Outcast is one of my favorite games of all time, and it allows for a secret code to be entered to enable lightsaber dismemberment.
This amazing game features the greatest character to come out of the Expanded Universe, and my personal favorite character: Kyle Katarn.
Dismemberment wouldn't be seen again in a Star Wars game besides Jedi Academy until The Force Unleashed II Demo, where it was later removed in the retail release.
I dedicate this video to Yenrara, a channel in the late 2000's which introduced me to let's plays through his Jedi Outcast walkthrough, I don't know why his channel and gameplay is missing, but wherever he is, I hope he is happy.