(Above: HBO President of Programming Mike Lombardo with Janice Crystal and Billy Crystal.)

Comedic all-stars and executives alike came out to support Billy Crystal at the Los Angeles premiere of his new HBO comedy special, Billy Crystal 700 Sundays (see slideshow below).

The original play is an autobiographical journey in which the legendary comedian plays numerous characters who have influenced who he is today and is one of the most-acclaimed and highest-grossing plays in Broadway history. The HBO special, which debuts tomorrow at 9 p.m. ET, was filmed in front of a live audience at the Imperial Theatre in New York.

Photo Credit: FilmMagic for HBO