In their Arts section of their website The New York Times run a great section called 'In Performance'. Here they showcase a short scene from a play currently in production in New York. The scenes usually run from about a minute to three minutes.

This is one of my favourite scenes from it. Matthew Maher does a monologue from 'Mr. Burns, a Post-Electric Play,' by Anne Washburn. Maher crops up in a lot of films and TV. Most notably for me in 'Gone Baby Gone'.