Myst co-creator Robyn Miller did not like Real MYST, saying it was an attempt to exploit the brand name and "definitely wasn't how we originally envisioned Myst, as was promoted." [Source: Retro Gamer Magazine, Load 59]
You don't even need to have the game installed:
1. Open the CD with windows explorer and go to the folder SCN/Maps.
2. There are two movies of interest here, "cyanegg" and "huevo". In case you are not aware, "huevo" is spanish for "egg".
3. Cyan egg features a series of photographs of the creaters and their families and huevo features mysterious static.
P.S. I'm pretty sure that these eggs are meant to be accessed somehow in-game, as all the other videos in this folder are, but I have yet to figure out how, I hope somebody out there soon will. Happy hunting.