PocketMatrix

So, as you may see from my other thread, I recently purchased a PPC with bluetooth (A620BT). To quote "The Simpsons", me having a bluetooth device is "like a mule with a spinning wheel- No one knows how he got it and danged if he knows how to use it." Anyhow, what does everyone here use bluetooth for? I feel that I can't let it go to waste... I figure step one is to get a bluetooth card for my laptop, but what other uses for bluetooth are there? I'm assuming there aren't BT "hot spots", but there HAS to be more of a use to bluetooth then just syncing with your PC without using cables.