Bobby Cannavale Bobby Cannavale

Boardwalk Empire is already filling the void left by — spoiler alert if you've got the finale waiting on your DVR — the death of Michael Pitt's Jimmy.

Bobby Cannavale has signed on as a series regular for the third season of HBO's award-winning drama. The 41-year-old actor will portray Gyp Rosetti, a charming, but ruthless gangster who will be a foil for Nucky (Steve Buscemi).

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Cannavale is well known for his roles in Third Watch, Will & Grace and Nurse Jackie.