Thanks to gilana for the tip about Arcadia. Went to see it Friday night with rmd and enjoyed it immensely. It's just finishing its run at the Publick Theatre, an open-air theater off Storrow Drive. If Bostonish folks want to see it, it's closing tonight, sorry! but I do recommend it if you read this in time (it's a 7:30 show). And similar open-air theater goodness with Comedy of Errors continues next week.
But I thought Arcadia was a particularly perfect play to see in such a setting, what with the geeking about the natural world and all. I love that play.