FILM: "Bats on a Plane" ... No Joke

It seems like after the "success" of the action film Snakes on a Plane Hollywood has assumed that we are willing to suspend belief in this way all the time.

Joe Dante (Gremlins) plans on directing an indie horror project called Bat Out of Hell, which is about a red-eye flight where hijackers "confront the monstrous cargo."

What other species would you like to see butcher a plane full of people thousands of feet in the air?