I just discovered iConquer for OS X. It's Risk, with network play. Augh. Risk was one of those games that used to be on the Mac waaaaay back when. I used to play it endlessly when I was on duty in the computer lab.
They actually did a nice job with this release. The game is Rendezvous enabled (of course), and when doing network play it sets you up to chat with the other players over iChat. Anyone up for a network game?