Eve Ensler is a famous American playwright and here she performs her own masterpiece, Vagina Monologue

http://www.youtube.com/watch?v=Ay4bOEfUI0s

I've seen it performed live by other theater groups as well --- also barefoot. It seems that this play is sometimes done barefoot and sometimes not. All characters are women, however. So if Vagina Monologues goes to your area, go have a look!