I have AirBlue 80 all around, including the windshield. It looks exactly like some of the older C Class Mercedes; it's got a blueish tint to it, but this particular film is known for that (hence its name). It looks clear enough to never get a passing glance for any law enforcement, and provides the same UV protection as a darker tint with most of the heat rejection as well. The only downside is that it's hard to find a tint place that carries this film.
Here's an example of how it looks compared to a window down, to give you an idea of light transmission and color. Film is applied to all windows including windshield, but the fronts are rolled down:
0522161913 by
botond.pal, on Flickr
Here it is with ALL windows rolled up:
0623161953 by
botond.pal, on Flickr
Coincidentally, both these pics were taken on the same track weekend, hence the track wheels.