surf the web!
setup your PC as a gateway to the bluetooth device. look for the thread:
http://www.wifi-forum.com/wf/showthread.php?t=34
it was pretty exciting when we finally got it to work. but then, afterwards, we are like, "ok, now what?" 480x320 isn't the best res for websurfing.
we were also sending pictures to each other. the PC interface to sending pics was pretty ok. drag-n-drop.
i am still looking for network games though. i wonder if there are networked games that allows playing between a PC and a palm.