MindGym is a quirky, surreal, mind-bending experience. I remember playing it on the family PC. It was one of a few games and other software that was induded with it.
It's a little hard to describe exactly what it's like. Imagine if Genie from Disney's Aladdin was your personal metal fitness trainer. It seems to combine the trivia and presentation of You Don't Know Jack with the wonder and exploration of Myst. Like an old TV show, I feel like I could recite everything word for word but it's still so weird and fun that it'd still entertaining to play through.
Unfortunately, modern versions of Windows refuse to run the game now so I'd really appreciate it being saved something like GOG's preservation effort. Not only would I be able to play it again but I'm sure it would appeal to a new, younger audince.