[Fanboy mode on]
Of late my gaming group which had been stable for years had a massive exodus of people moving for jobs and family reasons - sometimes out of the country. We made a conscious choice to keep gaming and invested in Fantasy Grounds.
Having wanted to play Call of Cthulhu for years and having had some success with Mongoose Runequest II we went ahead and kicked off our Call of Cthulhu campaign. I'm a person who loves funky systems - I've been aching to play FATE for years, I love the system of Bennies and powers in Savage Worlds. I was sorely tempted to play Trail of Cthulhu - indeed we probably will at some point - it has a lot of stuff I like.
What has been awesome however is how well the Call of Cthulhu game has gone. I wasn't sure I'd be too crazy about a system that "fades into the background" but it has worked amazingly well for us. I've made very few rules tweaks - occasionally halving or doubling a skill for difficulty, a rule mentioned in one of the Keeper Compendiums and we've used the idea I've seen here - that in critical clue situations a failed skill roll can mean a success with a complication. In our most recent game I had a player who made the comment - "hey I think I only rolled twice in this session" - and he meant it as a good thing.
I've also been pleased to see what sort of behaviors the system has encouraged. We took a break in the springtime to do a few D&D 4e sessions and while they were quite fun, players really focused on the character sheets to determine what they could do. In our CoC game the players have been super innovative. I was most impressed with a moment in our most recent game when they encountered a Servitor of the Outer Gods in a cavern hidden under a barn. I was convinced that this encounter would result in a blood-bath. As the Servitor began using its flute to call down a magical darkness they took the opportunity to get the hell out of there, barricade the entrance to the cavern, and burn the barn down! One player mentioned "we're only marginally better than your average person - if I see a sanity-bashing monster I'm going to run like hell".