Joss Whedon has signed up to write and direct the Avengers sequel because he’s not an idiot; the first one made a billion dollars. The more intriguing bit of news for Marvel fans and Joss Whedon fans (who are mostly the same people) is that he’s also signed up to create a top-secret new television show for Marvel Comics. No details were given on who (or what) this show might be about, but coming from the mind of the guy behind Buffy the Vampire Slayer and Firefly, you can bet that nerds are going to go crazy over it …