Dan: I have an older Palm, model IIIC, and really like it a lot, though I've recently been eyeing the new 'all in one' Palm OS -Cell phone device from Handspring, called the Treo 600. The 600 combines a full-featured mobile phone and Palm OS organizer with wireless applications like email, text messaging, web browsing and even a digital camera, into one device that's so small it fits in your pants pocket. The only obstacle for me is its price: $599 retail.
http://handspring.com/products/communicators/treo600_overview.jhtml

Now if I could only convince Santa Claus to deliver one to me for Christmas. - Scott