Producer Rodger Hess confirmed Bergen is being sought for the audience-favorite play already seen in separate stagings in Los Angeles and Miami.
Rue McClanahan dropped out of the upcoming Broadway production by mutual consent with the producers, it was announced June 27.
A 2003-4 Broadway date, house and a new leading lady will be announced in coming weeks. "Star Wars" veteran Hamill remains with the show following his turn with McClanahan at Miami's Coconut Grove Playhouse earlier this year.
Arthur Allan Seidelman continues as director of the new comedy about a widow who finds common ground with a gay dance teacher.
The play premiered two years ago at the Geffen Playhouse in Los Angeles, where Uta Hagen and David Hyde Pierce starred. Hagen, an acting legend, took ill and did not continue with the show, and David Hyde Pierce was committed to his work on TV's "Frasier."
The respected Bergen last appeared on Broadway in Roundabout Theatre Company's Cabaret and before that in Roundabout's Follies, as jaded Carlotta, singing "I'm Still Here."
Bergen, the stage, TV and concert/cabaret actress, was nominated for a 2001 Tony Award for Follies.