Do you know what Rifftrax are? Well, this page will explain what they are and also give you a chance to get a free one. But basically, what they are are "alternative commentary tracks" for your favorite DVDs. A team of expert riffers record silly comments in the manner of Mystery Science Theater 3000, a classic series for which the same riffers riffed.
So you got the concept? The guys from MST3000 record new commentary tracks…you buy and download them…then you watch the DVD but you listen to their comments. Only in this case, you don't have to buy your first one since they're making one — for Nestor, The Long-Eared Christmas Donkey — available for free. Give it a try. Nothing to lose.