Here's Playbill.com's weekly "Last Chance" reminder to catch Broadway and Off-Broadway productions before they close. Concluding June 21 Our House (Off-Broadway at Playwrights Horizons). Theresa Rebeck skewers America's obsession with reality television in the dark comedy that unites the lives of a bigshot TV executive, a news anchor-turned-reality-host and a group of volatile housemates from Middle America. For tickets visit TicketCentral.A Battle of Wills/Internal and External (Off-Broadway at the Acorn Theatre). Cause Célèbre presents the series of one-act plays by Dorothy Parker, Harold Pinter and Susan Charlotte that features a rotating cast including Delphi Harrington, Tasha Lawrence, Lizbeth Mackay, Carolyn McCormick, Larry Pine, Marian Seldes, John Shea, Kevin Stapleton and Frances Sternhagen. For tickets visit TicketCentral.