This week ctors and crew are shooting the pilot of HBO's new drama Boardwalk Empire at the Montauk Club in Park Slope. Martin Scorsese is the director and Terence Winter, a writer and producer of The Sopranos, is the writer. The series is being produced by Scorsese along with Mark Wahlberg and Steven Levenson.  Here is New York has photos. An outdoor set is being built in Greenpoint.

Here is the cast list: 

• Steve Buscemi starring as Nucky Johnson
• Kelly Macdonald as Margaret, an enterprising Irish immigrant
• Michael Pitt as Jimmy Darmody, an ambitious punk in Nucky’s gang
• Michael Shannon as federal agent Van Alden
• Stephen Graham as Al Capone
• Vincent Piazza as Lucky Luciano
• Aleksa Palladino as Angela Darmody, Jimmy’s wife
• Paul Sparks as a bootlegging funeral director
• Shea Whigham as Eli Johnson, a corrupt county sheriff
• Anthony Laciura as Louis Kessel
• Charisma Carpenter in an as-yet unnamed role
• Ann Marie Seall as Babette

From the  Boardwalk Empire website here's a plot summary of the book on which the HBO series is based:

A bustling little city by the seashore, totally dependent upon money
spent by tourists, Atlantic City’s popularity rose in the early 20th
century and peaked during Prohibition. The resort’s singular purpose of
providing a good time to its visitors—whether lawful or not—demanded a
single mentality to rule the town. Success of the local economy was the
only ideology, and critics and do-gooders weren’t tolerated.

By 1900, a political juggernaut, funded by payoffs from gambling
rooms, bars, and brothels, was firmly entrenched. For the next 70
years, Atlantic City was dominated by a partnership comprised of local
politicians and racketeers. This unique alliance reached full bloom in
the person of Enoch “Nucky” Johnson—the second of three bosses to head
the Republican machine that dominated city politics and society.

In Boardwalk Empire, Nucky Johnson, Louis “the Commodore”
Kuehnle, Frank “Hap” Farley, and Atlantic City itself spring to life in
all their garish splendor. Author Nelson Johnson traces “AC” from its
humble beginnings as Jonathan Pitney’s seaside health resort, through
the notorious backroom politics and power struggles, to the city’s
astonishing rebirth as an entertainment and gambling mecca where
anything goes.

Boardwalk Empire is a colorful, irresistible history of a
unique city and culture. Here is proof positive that truth is
stranger—and more compelling—than fiction.