The Soho Playhouse is an artistic institution in New York that punches well-above its weight in the theatre world. Much of this rests on the Fringe Encore Series, which brings some of the best fringe work from around the world to its stage. With “Afghanistan is Not Funny,” it has scored again. Henry Nayler's one-actor show has won more awards than many shows have had performances, and Nayler himself has won at Edinburgh 3 times. And they were well-deserved, every one of them. Like most one-actor shows, Afghanistan is Not Funny relies on the personal adventures of the playwright. Back in