My pc can't handle new-ish games, and besides not much time in my hands lately, but my favourite games are Mount & Blade Warband (excited for the upcoming newest instalment!), Civilization style strategy games, and any good crgps (especially the classics, like Baldur's Gate, Neverwinter Nights, etc.).
The only game I constantly try to keep playing (and still playing currently) is Dungeons & Dragons Online (DDO), an old dungeon-crawling MMORPG.