I've used my Palm for years for a whole variety of things. I listed the books I have on it a little while ago--one reason that it is jam-packed and I feel the need for a new one. No expansion port so I'm stuck with 8Mb. No easy wireless option (unless I buy a Palm modem and who wants to have to plug into a walljack and dial-up?).
It's enough to make me want to buy the Tungsten E. Just waiting for the Xmas sales (I live in hope!).
But one of my favorite apps for the Palm, perhaps my favorite app is Avantgo. Installing their connectivity software allows one to download content from hundreds of channels. Few pay attention to one of the key features of the software--the ability to create one's own channels from any Web site. Normally, Web sites have to publish their content in a particular format (determined, I believe, by XML) in order to have the Avantgo agent pick it up and display it properly.
But it is also possible to just tell Avantgo to make a particular site a channel. It doesn't work with every page but enough that it really extends the capabilities of the medium. One could, for instance, write scripts or use apps to bring in content from things like RSS feeds and synthesize those into a single Web page, thus collating information from all over the Web into a single channel.
I just got Avantgo working with my Palm again. Since shifting to largely using OS X, I found that Avantgo doesn't publish software that works on OS X. So I had to find an alternative. I got a pointer on the Avantgo site and its working ten minutes later.
My channels are: