In London, it is playing at one of the West End's smallest playhouses, and feels full of homespun charm. On Broadway, on a larger stage, it seems to have found the courage to take even bigger risks. The result is not just the funniest play on Broadway at the moment, but also one that demonstrates that the London fringe can still act as a launch pad to bigger things. Broadway is sure to take this show to its heart. A long run seems likely.