He sure is! Following in the "why is this guy in Batman?" footsteps of The Dark Knight's Anthony Michael Hall and Eric Roberts, Matthew Modine has been cast in the latest chapter of Christopher Nolan's superhero franchise, and will be playing a character only described as "Nixon." So take a breather, Harry Connick Jr.; your main competition for all the Gentle Man Who Becomes the Boy's New Dad in a Straight-to-Video Family Film parts is busy for a while.
Eleven-year-old Joey King and Scottish actor Tom Conti also reportedly joined the film, but their parts are being kept tightly guarded. Probably because they're Young Riddler and Scottish Riddler.