I've got a Sony VAIO laptop with a 1.6 GHz Intel Core Duo thinger, 1GB RAM, and a 15.4" glossy screen running Windows XP Media Center. But I'm not a coder, I'm a writer... so my work environment is general Microsoft Word. I did only pay $941 for it, though, and so far have been quite pleased.
I also have a Dell Inspiron B120 that had a 1.4 GHz Celeron M, 512MB RAM, a 15.4" screen and Win XP Home... it really kind of sucks and was made very poorly. But it only cost $400 and is a nice backup.
And I have a desktop, too, but it's pretty old (AMD Athlon 1.8GHz, 1GB RAM, 21" CRT, Windows XP Home--top of the line in fall 2002) ... I use it mainly for storage and Photoshop now... plus it has a bitchin' sound system.
I've really added nothing to this thread, but I wanted to join in the fun of typing out my system specs.