SCENA Theatre reprises its production of The Importance of Being Earnest, the Oscar Wilde classic that played to sold-out houses last summer. The tale of class and marriage both revels in and mocks the notion of leading a double life -- and SCENA tells it using cross-gender casting, with strong female characters played by men, effeminate male roles played by women, creating its own internal comedy of errors. They've also set it in the roaring '20s, when women were feeling liberated to act like men. To Aug. 21. The H Street Playhouse, 1365 H St. NE. Tickets are $16 to $40. Call 703-683-2824 or visit scenatheater.org.