Here's the first trailer for Clint Eastwood's Jersey Boys movie — yes, that Clint Eastwood — based on the long-running Broadway musical about Frankie Valli and the Four Seasons. John Lloyd Young, who won a Tony for his stage portrayal of Valli, is back in the role, along with Vincent Piazza (Boardwalk Empire), and Christopher Walken as a mob boss. If you were concerned about how Hollywood's foremost rugged octogenarian would fare with his first foray into musical theater, fear not: It appears that Eastwood is sticking pretty nicely to the musical's key elements, with plenty of direct-address monologues in thick New Jersey accents followed by high-pitched song and dance numbers. Sort of like Goodfellas, if it was a crowd-pleasing jukebox musical directed by Dirty Harry. Count us in.