The Mamet work will begin previews at the Royale Theatre April 8 toward a May 1, 2005 opening.
Clapp — who will play Dave Moss — joins a cast that features Alan Alda (QED, "M*A*S*H"), Jeffrey Tambor (Sly Fox,"Arrested Development") Liev Schreiber (Henry V, "Scream") and Frederick Weller (Take Me Out, "The Shape of Things") in a new staging by Tony Award winner Joe Mantello (Assassins, Take Me Out).
"The timing could not have been more serendipitous," said Clapp in a released statement. "I was planning to get back to the theatre after 'NYPD Blue' ended, and this was a role on my wish list. I'm thrilled to do it in such grand company."
Known for his Emmy Award-winning turn as Det. Greg Medavoy on ABC’s long -running cop drama "NYPD Blue," Clapp will make his Broadway debut in the production. His career began in the theatre in Canadian productions of "Henry V," "The Tempest" and "True West" while a company member of the National Arts Centre in Ottawa. He appeared last year in the Los Angeles production of Blackout. His film credits include "Moonlight Mile," "Rules of Engagement," "Eight Men Out" and "The Rage: Carrie 2."
Glengarry Glen Ross follows the cutthroat world of real estate where salesmen are vying for the best leads to make the biggest sales. The play was produced on Broadway in 1984 under the direction of Gregory Mosher following London and Chicago runs. The drama earned playwright Mamet the Pulitzer Prize and Best Play Tony Award nomination that year and was later adapted by the scribe for the 1992 film. Alda will take on the role of Shelly Levene, Tambor will be George Aaronow, Schreiber will portray Richard Roma, Weller plays John Williamson and Clapp is set for Dave Moss. The two remaining male leads are yet to be cast.
The design team of Glengarry Glen Ross will feature Santo Loquasto (sets), Laura Bauer (costumes) and Kenneth Posner (lighting). Producing the revival will be Jeffrey Richards, Jerry Frankel and JAM Theatricals.