Mrpandora and WyoLifter are correct, in that you will be in pain the first couple times after boarding, but after that you pick it up rather quickly.
ITJock makes a good point, in that telemarking can be fun from what I've heard from friends. But I have to emphasize that a boarder can go basically anywhere a skier can go, simply by snowshoeing to the same places. Obviously, it's a much different experience than telemarking, but it's so worth it for the glory of boarding through untouched powder in the back country. And I just plain enjoy snowshoeing, even if I don't have a board strapped to my back.