- Death of a Salesman - Arthur Miller (1948)
- The Cocktail Party - T.S. Eliot (1950)
- Rosencrantz and Guildenstern Are Dead - Tom Stoppard (1968)
- Borstal Boy - Frank McMahon (1970)
- Children of a Lesser God - Mark Medoff (1980)
- Dancing at Lughnasa - Brian Friel (1992)
- Proof - David Auburn (2001)
Full list of winners is here.
Also, I'd just like to mention an awesome thing I've come across recently:
Random Acts of Kindness hosted by Booksoulmates is amazing. Basically you just sign up your book wishlist, and then can access the wishlists of everyone else who's signed up and can gift people books, and people will hopefully do the same for you! I really really love this idea, and have already gifted a book, and managed to not even break my buying ban!