I've even used GPS Sport Tracker (freeware) to beat a ticket, as it records your speed, altitude, and position via GPS. I proved that I was well below the claimed speed, and actually below the speed limit, as my GPS records were updated every second!
It's also cool to turn on (with all other radios off - just the GPS receiver on) when flying, and check your speed and altitude; it's pretty accurate, if the information shown on the flight status screen on the airplane is correct!
Truly the ultimate phone; about the only thing I could think to add would be a second micro SD slot, as the format currently only supports 32 GB per card; having two slots would allow me to carry a full 64 GB of information, one I could pack with entertainment and the other with business and important (and encrypted) information.
It was great at CES to have all my business contacts at Apple come and find me to use my phone for phone calls, web access, etc. while their iPhones couldn't connect to the network. And when they saw how much faster it was to enter information with a REAL keyboard, how a higher resolution screen looks, and what SPB Mobile Shell's UI looks like (and how it is totally customizable) there were several that walked away wanting it... Alas, politics in the workplace would not allow that!