A couple months back my wife got a new macbook and I took her old iMac. I have a unibody macbook pro so I don't really need a desktop but it is handy to leave on 24/7 for downloading, using the remote application on our phones (we have an airport express or apple tv in all the main rooms and bedrooms), and using it for basic stuff like e-mail and the internet. When I have to work from home I typically use my laptop but sometime I use the iMac along with it because of the dual screens (it really helps in my field).
20" iMac Intel Core2Duo w/ 3GB Ram
20" Cinema Display
Bose Companion 5 Speakers
Logitech MX Revolution
Logitech di Novo Edge, Mac Edition
Two 500GB G-Tech Q
One 750GB G-Tech Q
Not pictured is a Konica Minolta Color Laser, Epson Scanner, EyeTV Hybrid, Airport Extreme, and one 750GB el-cheapo maxtor drive (used to serve up media to Boxee on the Apple TVs, back when I only had a laptop at home I needed something on 24-7 for streaming). In other rooms there are 4 airport expresses (office, guest room, dining room, garage) and two apple TVs (living room, bed room).Work Office
24" iMac 2.4Ghz w/ 4GB RAM
22" Dell Monitor
15" Macbook Pro 2.53Ghz w/ 4GB Ram
LowKey iMac Stand
Eikon Finger Print Reader (I come back to my desk a lot with different people to show them things, that way I don't have to enter my password in front of them)
Not pictured is a Fujitsu scansnap, HP BW laserjet, brother USB label printer, one g-tech 120GB FW800 drive and two 750GB Lacie Neil Poulton drives (time machine for desktop and laptop).