I have a iMac here and since I have a good amount of hardware lying around I thought I would network this puppy and have a wireless router in line with the Ethernet to my Cable Modem. Well, the first one I can think of is a Netgear WGR614 v5. I thought about using it but I figured it better to ask what seems to work very well, is multi-port and likes Mac computers. Like to hear about your experiences..
Airport Extreme or the ZyXEL 660NH (allows you to turn WiFi on/off with the push of a button) would be my recommendation.