ET opens the vault (or maybe… Batcave?) to unearth rarely seen interviews with the cast and crew of 2005's 'Batman Begins.' Christian Bale (Bruce Wayne/Batman) to Michael Caine (Alfred Pennyworth), Katie Holmes (Rachel Dawes), Gary Oldman (James ‘Jim’ Gordon) and director Christopher Nolan all explain how they grounded the comic book adaptation, aiming to answer all the questions of how Bruce Wayne pulls off being Batman. Source