For me, Dark Heresy. Describing it to my group as "Call of Cthulhu in the 40k universe" probably didn't help my cause, in retrospect.

I really enjoy Dark Heresy. I like that characters are completely unmatched to the horrors they fight (it's a bit threadbare though - characters don't have all of the skills at rank 1 that even a novice of their career should really have).

My fondest memory is having my priest scream "WITCH!" while pointing at our Sanctioned Psyker, before diving behind a dumpster when two guys with Autoguns drew down on us. Good times...

Every single rpg ever. I buy games, get my group to try it, but... no one but me will run it. I am the EverGM.

This sounds about right, though I am slowly cultivating new GMs. Hopefully I can get the Wife to run her first game soon; she likes creating new stories, but she's been too timid to step behind the screen.

If I had to pick one game I've always wanted to play, but couldn't, it would be Legend of the Five Rings. This game has one of the richest and most vibrant settings I've ever seen in a RPG.

Cyberpunk 2020, is pretty high on that list too . . . Probably third, right after Call of Cthulhu (BRP, any edition). Though I've played a single session of 2020. . . Such a tease! *weeps*

Blue Planet, I bought the core rules at a local gamestore's going out of business sale than found out I was moving, and barely had time to finish the WEG Star Wars Campaign I was part of before I moved.

Also if we're including collectable card games than Decipher's Jedi Knights CCG and Wars CCG, and the WOTC Star Wars TCG.

A friend of mine who was into the Decipher Star Wars CCG wanted to try Jedi Knights so I bought decks and some packs but he changed his mind before he bought any. Than a group of friends in college wanted to try the Star Wars TCG but some of them had a massive fight over winter break and the group fell apart. And finally a few friends who had played the Star Wars CCG wanted to try Wars but they bought it and played it without me, I was on vacation at the time and decided they didn't like it. Of course no one told me until after I had bought two starters and about a dozen boosters with some money I got for my 21st birthday.