In the general sense of the word, it does qualify. However, my personal definition of doing science requires devotion toward advancement in a specific scientific field. I don't think that definition is actually uncommon. Specifically, few scientists (physicists, chemists, astronomers, biologists, etc...) will ever reference the work of the Mythbusters in their studies or attempts at explaining the universe or aspects of it. Bill Nye would be more likely to be referenced (at least by an aeronautical engineer), in my opinion, but like I said I don't imagine that's either's main focus; that is education. Mythbusters is specifically devoted to applying the scientific method to debunking myths, and that's awesome, but since they're not devoted to advancing a scientific field, I don't see what they do as science. As a far fetched analogy: if I apply the scientific method to blogging, it doesn't mean I'm doing science.