Lately, I've been playing "Mount & Blade: Warband", a medieval wargame. The single-player campaign is fun and involves being tricked into having your RPG turn into a wargame. "Hey, that bandit was mean! You should hire five peasants to help you go beat up his gang. And now that you're leading a bunch of guys, you should hire more and do some mercenary work..." Combat is action-oriented and has some neat parry-block-slash action and a variety of weapons and armor. I've only been playing multiplayer lately, which has a good siege-battle mode with 90+ people storming into and around a castle at once. I hear "Chivalry" is a good alternative, but wasn't crazy about the emphasis on gore and murdering peasants.
Also played a lot of "Supreme Commander: Forged Alliance", pretty much always as the Cybrans, for story reasons instead of actually being good with stealth. Didn't like online multiplayer though, because hyper-aggressive rushing seems to be the only viable strategy there and I prefer a more careful "turtle" approach.
Bought "Divinity: Dragon Commander" recently. It's interesting but clunky in several ways. Weird RTS mechanics, for one thing; you win or lose without actually destroying the enemy. I do like the concept that you're doing things on a strategic map that then set up RTS battles with various units in play.
I'd like to start up "Skyrim" again with a new, expanded civil war mod. Already have a neat hypothermia mod ("Frostfall") that really adds to the gameplay.