Mazes and Minotaurs is a what-if game, where the authors imagined Gary and Dave had used Greek myth as the basis for D&D instead of LotR. I really like it. I've been wanting to do some Greek gaming anyways, as I've recently been watching a number of older movies. Stuff like:
Hercules: The Legendary Journeys
Xena: Warrior Princess
Jason and the Argonauts
Clash of the Titans (Harry Hamlin version - still haven't seen the new one, not sure I want to).
I like the idea of a small group of warriors going out with a shield, a spear, a sword, and a helmet (and maybe some body armor) to kick some butt and become heroes.
There are two versions of the game, the "1972" version, and the Revised version. I'm probably going to go with Revised, as it does not go the AD&D route, and get a lot more complicated. It just adds classes and options. And the Revised version has been getting semi-regular updates in the web magazine Minotaur.
My only serious issue with this game is that it is pdf-only. No print versions available. So I'll likely have to go to Staples and get a bound copy made, if I get a chance to run this.