Wireless network here in the house. With 4 computers (3 of the Macs) spread all over the house, it is soooo nice to be using wireless. I hated the days of wired chaos (I hate managing cables).
No. Our desktop (my computer) is connected via ethernet to the router directly (which then goes through the cable modem... my stepdad's computer uses the wireless though
Airport Express since I got my iMac. I could use the ethernet cable because my iMac is 5 feet away from the modem, but I like the network for my Wii, DS, etc.