Interesting side-effect of Hulu, from talking to TV-less friends: If you're downloading the episode each week because you don't have a TV or you prefer to watch on the computer, you have a complete collection at the end of the season--you're building it in small chunks. Post-Hulu, there's no collection-building, and therefore you may be more likely to buy the DVD set rather than download for days straight. There also may be a psychological aversion to downloading something that is available for purchase in physical form (a collection) rather than something that is not (an episode).

Of course, the plural of "anecdote" and "speculation" is not "data"....