Auburn's Fifth Planet and Other Plays (2001) contains several one-act plays that Auburn wrote before Proof. The plays are Fifth Planet, Are You Ready, Damage Control, Miss You, Three Monologues, What Do You Believe in the Future, and We Had a Very Good Time.

Wit (1999) is a Pulitzer Prize—winning play by Margaret Edson. The protagonist is a female scholar of English literature who specializes in the work of the seventeenth-century poet, John Donne. She is now dying of cancer and uses the experience to explore mortality, the value of human relationships, and how life should be lived.

Copenhagen (2000) is a Tony Award—winning play by Michael Frayn about Werner Heisenberg (a physicist who was head of the Nazi's attempts to develop a nuclear bomb), Danish physicist Niels Bohr, and his wife Margrethe. Bohr and Heisenberg met in Copenhagen...