You can access weather.com and get weather info. I use my Pronto for that plus connecting to and managing players on Logitech Media Server (SqueezeCenter) controlling 2 players that allow access to 110K+ music tracks. I also do 2-way control of denon/marantz receivers/preamps. Some folks use the Pronto to view jpeg images downloaded from Security Cameras.
Finally, I have an X10-TI103 controller which I use with an RFX9600 serial extender to control lights, etc...