My copy turned up on Saturday. I'm installing it right now. The disc copy actually activates and installs through Steam, which is really cool, because it means I can install it on my laptop too. Probably won't have too much time to fool with it before my Thanksgiving vacation, but I'm looking forward to playing it (hopefully with you guys) when I get back next week.
Update: after installing, the game crashes silently to desktop right after the Firaxis cinematic. Loading without the movies doesn't help. Reloading on my gaming desktop from Steam's repository (hoping I just had a bad DVD). I'll have to see if it does the same on my laptop after I'm done using it as a spare TV for football. According to the Steam forums, this problem is fairly common.