Seero recently implemented the feature for users to upload a GPX file along with their pre-recorded videos. This feature opens up the geo-locational doors for all those people out there recording video with their digital camcorders and cameras. (No internet connectivity necessary!)
All you need to do is switch on a device that records and outputs GPX (the standard GPS logging format) while you are shooting your video. When you're finished, you upload your video and GPX file to Seero. You can then sync your GPX route to your video time-line based on your location.
One GPX recording device we've been trying out is the Trackstick. It's very simple to use: you simply switch it on to start recording your trail and turn it off when you're done. You plug it into a USB port on your computer and use the track stick software to upload your GPX trail.
MobileTracker for Blackberry also has an option to output to GPX, which allows all you blackberry users to utilize this new feature.
If you are using a GPS device that outputs in its own native format (Garmin), there is a nifty tool called GPS Babel that allows you to convert to GPX.
One of our broadcasters, AtlasRider, has already utilized the GPX feature to track some of his motorcycle trips (see embed below):