oh, thank god I wasn't the first one to post about nerdy board games. Catan is pretty great-- my cousin and her boyfriend introduced my fiancee and I to it about a year and a half ago, and it's all been downhill from there as far as nerd games are concerned. I got a copy of Cosmic Encounter for Christmas last year, and I highly recommend it, especially if you're into science fictiony stuff. Agricola is a pretty fun game that revolves around farming, of all things.