What options do I have to charge my GPS and Phone using a dynamo hub? I'm planning to purchase a supernova infinity-8 dynamo hub and wanted to use this during daylight hours to charge my Phone and GPS during bike tours. 

What products are available that will work with hub dynamos to charge iphone and Garmin GPS units?
You might want to look at the Biologic ReeCharge by Dahon. It says it hooks up to any standard dynamo hub. The nice thing about this is that it has its own battery. So the dynamo charges the internal battery and the battery charges your phone/gps/device. This allows you to charge while you are resting, as well as provide added protection against sending bad current to your device.  I don't have any experience with it, but the idea is sound, and Dahon has many good products. It sells for $100 which isn't too bad considering it has its own battery.