Dan's favorite drink is Crystal Skull Vodka. You've probably guessed right, for it truly is a crystal skull with vodka inside. No, this is not related to 50 Cent: Blood on the Sand or Indiana Jones: Hiding inside of a Fridge.... I mean The Kingdom of the Crystal Skull.
Dan is also known for his interest in aliens and conspiracy-esque theories. The character Ray from "Ghostbusters" is technically based on Dan.