DEBUT: The Irvine Barclay Theatre, which just...

DEBUT: The Irvine Barclay Theatre, which just opened in September, is about to get its first national exposure. . . . Comedian Garry Shandling has two shows slated for the theater Saturday night, and they’ll be filmed for an HBO show expected to air around July. Shandling’s publicist says he wanted to do the show “in a more intimate theater than a big building.”