Don Hertzfeldt's latest animated short World of Tomorrow is available on Vimeo for $3.99 for 30 days. I know people have price anchors scattered all over the map when it comes to different products (which is why the argument that “it's just the price of a Frappucino!” doesn't work when it comes to mobile apps, for example), but World of Tomorrow is likely to be one of the best movies you see this year. Hard to put a price on that.