Nothing gets my motor running like a good deal on a Wi-Fi printer. Circuit City has the Lexmark Z1480 color inkjet on sale for $40.96 shipped (plus tax in most states). It's a fairly basic printer, but because it's equipped with Wi-Fi, you can stick it anywhere and not have to worry about yet another snaking cable ruining your office aesthetic.
The Z1480 includes both USB and 802.11g interfaces and runs on Windows and Mac systems. It's a dual-cartridge printer that promises color output at resolutions up to 4800x1200 dpi. A set of replacement cartridges will run you $39.99 if purchased at Circuit City, and I didn't find much better prices online. (Hey, don't get mad at me. That's what ink cartridges cost. Take it up with the manufacturers.)
As I've said before, once you've experienced the thrill of printing wirelessly, you'll never go back to those accursed USB cables. See you in hell, cables!