The Tony Award winner has been quite busy as artistic director for the Williamstown Theatre Festival, working as an actor or director in Don Juan In Hell, Herringbone and his one-man show What You Will – An Evening By and About the Bard.

Rees, whose Broadway credits include Uncle Vanya, Indiscretions and his Tony-winning performance in The Life and Adventures of Nicholas Nickelby, will also star in the upcoming production of Friedrich Dürrenmatt's 1962 comedy The Physicists.

He will be joined onstage by Mark Blum (Twelve Angry Men, The Graduate), Rob Campbell (Ivanov, Translations), John Feltch (Enchanted April) and Brenda Wehle (Stuff Happens).

The Physicists, according to press notes, centers on "three inmates at the Cherry Trees Sanatorium [who] believe themselves to be world famous physicists: Albert Einstein, Isaac Newton, and Johann Mobius. But are they indeed insane? And what are their actual identities -- madmen, murderers or scientists?" Kevin O'Rourke will direct a translation by James Kirkup.

The creative team includes costume design by Deborah Brothers, lighting design by Colin Bills, set design by Alexander Dodge and sound design by David Sanderson. The Physicists runs Aug. 7–18 at '62 Center for Theatre and Dance of Williams College on 1000 Main Street in Williamstown, MA. Tickets are available by visiting www.wtfestival.org or by calling (413) 597-3400.