This little gadget is totally the coolest thing I've seen all day. It may be one of the coolest things I've seen all year, for that matter. If you haven't seen it, check out the AirPort Express, the smallest wireless access point around, retailing for only $129.
MacWorld has a bit more about it here, as well as some info on the AirTunes software, used for streaming music from iTunes to your home stereo. While not quite as flexible as a full fledged AirPort base station, it's an incredible deal for what it does.