yeah, Level 1 had a lot of real time shots in their early days, but most of the footage was in the park, or other locations where it was easy and cheep to get shots. Not to mention how much easier it was to "get a shot" in the early days of freeskiing.
snowboard videos are getting pretty good at putting a lot of real time shots in their videos these days. Think Thank usually does a pretty good job if I recall. And I only watched the first half so far (and I was drunk), but this years Capita video "Defenders of Awesome" was really, really awesome for this as well... not to mention the riding in it is so... awesome.