When it closes, Tracy Letts' acclaimed drama — which opened on Broadway Oct. 30, 2007 — will have played 18 previews and 648 regular performances.

Tony Award winner Phylicia Rashad (Gem of the Ocean, A Raisin in the Sun, "The Cosby Show") currently stars opposite original cast member Amy Morton, who recently returned to the cast.

Letts' comic drama about a dysfunctional Plains family that reunites when the patriarch goes missing won the Pulitzer Prize for Drama and the 2008 Tony Award for Best New Play.

August: Osage County also features Elizabeth Ashley, Anne Berkowitz, Guy Boyd, John Cullum, Kimberly Guerrero, Brian Kerwin, Mariann Mayberry, Michael Milligan, Sally Murphy, Troy West and Frank Wood.

* The three-act, three-and-a-half hour play made its world premiere at Chicago's Steppenwolf Theatre Company before heading to Broadway.

August: Osage County is produced by Jeffrey Richards, Jean Doumanian, Steve Traxler and Jerry Frankel. Anna D. Shapiro directed and won a Tony for her work.

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A national tour of August: Osage County launches July 24-Aug. 8 in Denver at the Ellie Caukins Opera House before moving to San Francisco's Curran Theatre Aug. 11-Sept. 6.

For more information, visit augustonbroadway.com .