As I've mentioned in the past, wireless printers rock. No, they rawk. For the last couple months I've been beaming documents through the Wi-Fi ether to a Brother HL-2170W, and let me tell you: I'm through with USB. It's just so liberating to stick a printer wherever the heck you want instead of having it tethered to your desk.
The HL-2170W lists for $150 and sells on the e-street for around $130, but you can snag one from Newegg for $99.99 shipped. CNET rated the printer 7.3 out of 10, but three users gave it an average score of 9 (I'm one of them).
Designed for homes and small offices, the HL-2170W offers Ethernet and Wi-Fi connectivity, a rated print speed of 23 pages per minute, and an extremely small footprint. When I click print, it starts churning out pages in a matter of seconds. The paper tray holds 250 sheets (letter-size only; Newegg's product description mistakenly says it handles legal, too), and there's a bypass slot for feeding all kinds of other paper (including envelopes).
Note that the included toner cartridge is good for about 1,000 pages; a high-yield replacement cartridge (2,600 pages) will run you around $45.
If you're in the market for a new small-office laser, give this Brother a look. It's quick, compact, and gloriously wireless.