When Barack Obama was in college, he fought vampires. At least according to the musical starring and directed by Justin Sherman. It's a little bit Harry Potter, a little bit Buffy, a lot bit that Dracula puppet show rock opera in Forgetting Sarah Marshall (but with real actors, not puppets). Here is a synopsis, from the creators:
Barackula is a short political horror rock musical about young Barack Obama having to stave off a secret society of vampires at Harvard when he was inducted into presidency at the Harvard Law Review in 1990. Obama (Justin Sherman) finds that he must convince the vampire society that opposing political philosophies can coexist or else the society may transform Obama to the dark side.
And just because it's so good, here is that scene from Forgetting Sarah Marshall, in which Peter sings "Dracula's Lament."