You can take this question two ways — a game you don’t get to play, period; or a game you don’t get to play, but run as GM. I’ll take both:

The first: We pretty much play most of the games on the shelf that I want to play. We tend to try and rotate the game and system on a regular basis to keep people from getting bored. That said, I would love to run Jovian Chronicles using some rules set that isn’t the monstrously awful Silhouette system. I’ve thought of porting it over to Cortex (the Battlestar Galactica version), but it just never quite gets there.

The second: Since I’m forever GM for most of my life, there’s a bunch I’d just like to play a character. That’s been a delight in Fallout, concentrating on one character (two if I’m playing for an absent player), but I think I’d really like to simply play in either Blade Runner or James Bond:007 (or any other espionage setting). I suspect, however, due to experience in both those venues, I’d be a pain in the ass to run for.