'Jersey Boys' Casting Begins; First Up Is Christopher Walken

Having grossed over a billion dollars across the globe as a musical, one might think the title Jersey Boys alone is enough to sell a film adaptation. That's likely part of why director Clint Eastwood is casting the lead roles of Frankie Valli and the Four Seasons with performers from the various stage productions.

But this is Hollywood and stars make a movie, so Eastwood will be filling out the supporting roles with bigger names. First up, Christopher Walken will join the cast as mobster Angelo "Gyp" DeCarlo, who helps the singers keep their career straight early on.

As for those leads, Deadline – who broke the Walken news – say they're gone to Vincent Piazza, John Lloyd Young, Erich Bergen and Michael Lomenda.