Here's my hobby dev workspace. The monitor at the left (HP vp17) is hooked up to a Dreamcast VGA box, running a game I'm working on. The notebook next to it is an old Dell Inspiron 3200 running Win2K to burn multisession CDs for the Dreamcast since I can't get my Mac to do the same. My desk setup is described below the pics.
My main Mac is a "Frankenmac" Gigabit Ethernet G4 (with the side panels and handles off my now-fried MDD dual 1.25ghz) upgraded to a single 1.8ghz processor, 2gigs of RAM, two hard drives (80 and 60 gig), a 250gig external drive, ATI Radeon 9800 Pro 128meg video card (PC flashed), Sonnet Tempo USB 2.0 card, cheapo speakers with sub, HP w2007 glossy widescreen monitor, running Mac OS X 10.5.2. The notebook is a Powerbook G3 Series 1998 "Wallstreet", 300mhz processor, 512megs RAM, 20gig hard drive, running Mac OS X 10.4.11 via XPostFacto, and running it very nicely too. The runtime I use to test my Dreamcast code runs fullspeed on the old 'book! The ipods are a last gen Nano 4gb and a Touch 16gb. The phone is a cheapo alltel POS.
The PC is an old Netvista motherboard with 1.8ghz P4, 1gig RAM, 80 gig hard drive. I use it for running emulators, games, and watching DVDs on my TV.