I started with 40k with Rogue Trader and 2nd edition, then stopped playing when I went away to school. My old army was Crimsom Fist Space Marines. I got back into 40k recently but I don't have an army myself anymore so I'm borrowing a buddies orks to play. WAAGH!
I've played Fantasy battle 4th-5th-6th-7th. Chaos Dwarfs and Empire. I still have these armies but I don't have the money to update to 8th.
I also do historical mini games and sci fi stuff too. For instance, I recently purchased ACTA: Starfleet and am giving that a go with a mix of old micromachines and the Wizkids clix figures.
I've also done a fair share of role-playing, both traditional paper-and-dice and computer games, over the years. Like many gamers my age, I started with D&D in the eighties and branched out from there.
Looks like a good group of fans here on the forums!