Happy Days begins previews Aug. 12, opens Aug. 15 and runs through Sept. 6 in Orinda, CA, in the Bay Area.

Joan Mankin will serve as understudy and will appear as Winnie at performances on Aug. 25-27 and Sept. 1-3. As previously announced, Dan Hiatt will play Winnie's monosyllabic husband, Willie.

"I am so sad not to have Marsha with us on this project anymore, but I am genuinely thrilled to have Patty Gallagher step and make this role her own," stated Moscone. "She is an exceptional actor and is going to make something beautiful for us. And to have Associate artist Joan Mankin understudying and being able to go on at certain performances is another blessing. Our entire company of staff and artisans are working day and night with these exceptional actors, including Dan Hiatt, to bring Beckett's glorious, complex work to life."

Gallagher is associate professor of theatre arts at University of California Santa Cruz where she directs courses in physical theatre, mask, Balinese dance, and clown traditions. She is director in residence for the Clown Conservatory, San Francisco School of Circus Arts. She holds a doctorate in theatre from University of Wisconsin–Madison. She has performed clown and buffoon with Teatro Cronopio and studied in Laboratorio Grupo Malayerba. She has worked with the New Pickle Circus, Fool Time Circus, Folger Shakespeare Theatre, Ripe Time, San Francisco Circus and the Weird Sisters Ensemble.

Hiatt appeared at Cal Shakes in 2008 as the title character in Uncle Vanya, for which he won a BATCC Award; previously as the Duke of Buckingham in Richard III, Straker in Man and Superman, Hermocrates in The Triumph of Love and more. For more information, call Cal Shakes at (510) 548-9666 or visit line ticketing are available at www.calshakes.org.