of course there is! CYBERSEX
yeah a lot of them<br />
World of Warcraft, Sims, Counterstrike, Everquest etc...
Do a Google search for "mmo [insert your category] game" (e.g. mmo fantasy game) and check out the individual results. I suggest you then do a Google search for reviews to see what other pla<x>yers think of the games. GL.
Yahoo Chess. Lolbbq.
I used to play tournaments (spades, hearts, etc) on Yahoo games...there would be four of us at a time.
Yes, try oz.ongameport.com. It's what me and my fiance play, cause I can't stand all the mmorpgs with the battles and stuff.
I'm pretty sure just about any online game has interactive options to play others. There are many different kinds of games though, so I'm not sure if you're talking about online checkers or poker or first person shooters like Halo or Unreal Tournament.