Wow, this is great. I just downloaded a piece of software called Clicker. It lets you control certain applications on your desktop (like PowerPoint) with your handheld. It works with WiFi and Bluetooth and has a Mac version as well.
On the device side, there are clients for Palm, Windows Mobile, and even many types of cell phones. This is a very handy tool if you do a lot of presentations (and don’t want one more gadget, like a remote). You can also use it to control iTunes or Windows Media Player, which makes it great for home entertainment uses.
Best of all, this was super-easy to set up. It just took me a few minutes to install it and get it running. It’s pretty cheap too at $23.95.
Clicker!