There's no doubt about it. Eureka Day is a very funny play. The show, now having its DC debut at Mosaic Theater, features five perfectly-attuned actors, a director who understands comedy, a script that generates laughter, and a surprise ending. It's also a satire about open-mindedness, and proof that the path to hell is often […] The post Playwright Jonathan Spector on the shadows that lurk behind the laughter in '…