Adaptation is a funny thing. What worked so shamelessly and wonderfully for adaptor David Ives in the Shakespeare Theatre Company's production of The Liar two seasons ago feels like way too much of a good thing in his latest re-invention of Jean-François Regnard's The Heir Apparent. A barely faithful take on this 18th-century comedy of a young and impecunious nephew trying to wheedle a fortune out of a thoroughly crotchety old uncle, there is far more here to make the wit-challenged guffaw on their gum than there is for those in need of the wry and dry. It's Ives's frantic dependence on SNL-style modern reference as well as his hideous nods to vaudeville that grate most. Closes Sunday, Oct. 23. Lansburgh Theatre, 450 7th St. NW. Tickets are $35 to $95. Call 202-547-1122 or visit shakespearetheatre.org.