Not that I have a cell phone (I know, I'm becoming a minority -- I already was one without a TV in the house), but I am interested in getting net access wherever I am. Natch, this lead to a lot of solutions, so here's a few goodies I've found...
Mobilewhack, put together by Rael Dornfest, has a lot on using cell phones as modems -- a neat trick. They also pointed out that you can get on Merlin G100 cellular modem card for about $30, with a T-Mobile plan for $30/month plus $35 or so for the SIM card, and have connection wherever T-Mobile has connectivity.
For anyone using the above or any other cell modem that has GPRS, Ross Barkman's page is a must for Mac OS X users -- as is John Chang's instructions on using a cell phone as a Bluetooth Modem
