Marginal Rates of Substitution

Fast forward to around 3:35 or so. First, how awesome is this scene? Answer: the most awesome. Second, I used the scene where Indy puts the bag of sand* in place of the gold idol to explain marginal rate of substitution to my grad students today, where the temple itself is on a given indifference curve. Apparently, Indy miscalculated how much a solid gold statute weighs. I'm no archeologist, but even I can tell that the idol weighed far more than the amount of sand he put on there weighed.

Here's Ebert's original review (4 stars) and here's his more recent review for his Great Movies selection.

* I couldn't help but think of Steve Carrell from 40-Year-Old Virgin comparing a woman's breasts to a "bag of sand."