Rudner, who appeared in the original runs of Broadway classics Follies, Annie, Mack & Mabel and Promises, Promises, also has a long career as a standup comic. Shaughnessy played Maxwell Sheffield on the TV series "The Nanny."
David Ambrose and Claudia Nellens are co-authors of the two-hander about long-married spouses in the "third act" of their lives, which was performed previously in Paris in 2011. The production is directed by Rudner's own real-life spouse, Martin Bergman.
The limited run continues through Jan. 31.
Act 3... will be performed at Laguna Playhouse, 606 Laguna Canyon Road, Laguna Beach, CA. To order tickets, call (949) 497-2787 or visit lagunaplayhouse.com.