Secure Mobile Phone
Looking around to see what sort of things exist to help keep mobile uploading of video secure, I ran across this article from OhGizmo about a GSM phone that uses 1024 bit Diffie-Helman encryption. I don't know anything about encryption protocol, but it sure sounds impressive. While this phone doesn't protect the user's identity it is a step in the right direction as it protects data from being intercepted during transmission.
Here's a phone from Italy that attempts to hide the caller's identity through a combination of anonymous sim cards and changing the phones unique ID number (IMEI) each time a new sim card is used.