Windows Phone Thoughts: Wireless Application Scenarios: What Do You Do?

I was contacted by someone at T-Mobile who was interested in starting a discussion about the usage of wireless data services. Using a wireless device to check your email is an obvious use - but what else? I know that Pocket PC Thoughts readers are some of the most creative people around, so what are you using your wireless device for? The focus here should be more on GPRS-type scenarios than WiFi, but barring that, anything is fair game. Show me how creative you are! :D