Apple - AirPort Express
I'm not a huge fan of Apple or most Apple products, but one Apple product I do find very handy is the Apple AirPort Express wireless base station. I've bridged our AirPort Express to our wireless router. What makes the AirPort Express so great is its portability. On a couple of occasions I've used the AirPort Express to set up Ubuntu on a laptop. Since the wireless in the AirPort Express is already configured all I need to do is find a wall outlet and a Cat5e cable. Plugging the laptop into the base station is just like setting up a wired network. Once Linux is installed and updates are done I can easily grab the wireless drivers and the notebook install is done.
Basically it saves me from plugging directly into our router, which is already crowded with devices and would require a very long Cat5e cable.