I recently purchased a Hewlett Packard HP 2510psc. It is a printer, scanner, photocopier, and fax machine, with built-in wireless (802.11b).
It gets good reviews in the various computer magazines, and I am pleased with it. My only reservation with it is with the scanning side which seems to be slow, and scanned documents, when saved to my computer are HUGE, so I don't use that facility often.