My tablet PC has made my door to door prospecting much more effective. With a TabletPC equipped with Verizon wireless internet access you can walk up to a house, pull the field card, check mls for past sale activity, and verify owner name so that you can call prospect by name once you get to the doorstep. Not to mention the impression new technology makes on a prospect...people tend to think you offer cutting edge service if you possess/are able to afford cutting edge technology.
You can also simply jot down notes on tablet's screen in long hand while obtaining info from client and tabletPC automatically converts your writing into a saved file.
Highly reccommend the version of TabletPC sold by Motion Computing. It has a special screen that is easier to read outdoors and from different angles.