This car was parked in front of my building. A Canadian Fit with a sunroof!
I had heard of a local dealer offering this as a dealer installed option. So this could be one of them. Also, Fitfreak.net has a thread where someone installed an aftermarket sunroof in their Fit here.
The one installed on that particular Fit is from Webasto Hollandia. They also make a number of different types of sunroof, including twin vent single sunroof, and a large panoramic moonroof that expands almost the entire length of the Fit's roof. Now that I think would be pretty cool to have.
I remember back in my Audi days when I had my entire interior reupholstered, the shop I went to also did sunroof installations. It might be worth looking into for some people.