uh, back from catching up with work after the holidays - probably it is too late for a fresh nomination, but I will try nonetheless: so my first nomination is Ibsen's Peer Gynt - here is the blurb from Amazon:
"Peer Gynt was Ibsen's last work to use poetry as a medium of dramatic expression, and the poetry is brilliantly appropriate to the imaginative swings between Scandinavian oral folk traditions, the Morrocan coast, the Sahara Desert, and the absurdist images of the Cairo madhouse. This translation is taken from the acclaimed Oxford Ibsen. John McFarlane is Emeritus Professor of European Literature at the University of East Anglia, and General Editor of the Oxford Ibsen.
There are various free versions available, e.g. here
As for my other two nominations, I'll fifth "Candida" and I will fourth "Rosencrantz and Guildenstern Are Dead".