In fairness, Indiana Jones and the Kingdom of the Crystal Skull doesn't have much going for it in terms of viral marketing potential; it's not as though Ow Shia's Balls brand jockstraps or My First Carnivore Ant Farm sets were on backorder when the film opened last May. But one savvy (if completely incongruous) cross-promotion has indeed sold out in advance of Indy 4's DVD release Oct. 14: Crystal Head Vodka, pimped by unassuming pitchman and Indy franchise alum Dan Aykroyd on a Web site making the rounds today. Despite the overall conceptual stupidity that uncannily mirrors the film it intends to sell, the set-up nevertheless extends all the way to a popular liquor site that turns you away when adding Crystal Head to your cart. So relax, parents! It's safe for your kids — or at least safer than Scooby-Doo's disastrous Rummy Rum Rum!™ tie-in from a few years back. Matthew Lillard still hasn't recovered from that one. [Crystal Head Vodka]