I found this comparison online. Here in the U.S. Miller 64 Low Carb is about as low as they go.
2.4 G of carbs and 64 calories. I actualy haven’t seen or tasted this beer. The most common low carb beer I see in stores is Michelobe Ultra which is 2.6 G and doesn’t have much taste to it.
http://www.bellaonline.com/articles/art14302.asp
Now, I’ve got to see how many carbs that champagne has waiting in the fridge for tonight.