This Hour Has 22 Minutes takes a look at copyright and file sharing, and blank cassettes, and blank video tapes, and blank paper:

[Edit: as of 2025, this video is no longer available.]

It's too bad they didn't bring up probably the oldest and most common form of legal media sharing - libraries - but no worries, The Philadelphia Story covered that one decades ago. [Edit: as of 2025, the video previously linked here is no longer available. The link was to a scene in the movie where Jimmy Stewart's character suggests that he can't make a living as a writer while there are libraries around. It's said in a joking manner.]

Update: For anyone who doesn't want to click on the link, here's the video. You'll have to manually go to the 6:49 mark; the link jumps there automatically but for some reason the embed code won't let me do that.

[Edit: as of 2025, this video is no longer available.]