It all started with iPhoto '09 and "Places." If I was going to teach the application properly in my Lynda.com trainings and in iPhoto The Missing Manual, then I was going to have to get serious about geotagging.
As I researched accessories for my Canon 5D Mark II and the Canon G9, I discovered that there wasn't really an affordable, convenient geotagging solution for these cameras. After much debate, I finally settled on trying the Jobo photoGPS Geo Tagging Flash Shoe device for $175. It is both Mac and PC compatible, and seems to allow a reasonable workflow for adding GPS data to my images, both Raw and Jpeg.
Once I get the device and fine tune the workflow, I'll report back here. In the meantime, if you have any tips, please post a comment.