Gilbert and Frank welcome one of their personal heroes to the show, iconic writer-actor-director Carl Reiner, who recalls his earliest years in the business, shares his admiration for Steve Allen, Sid Caesar and Dick Van Dyke and looks back on his feature film collaborations (“The Jerk,” “Dead Men Don’t Wear Plaid”) with Steve Martin. Also, Gilbert and Carl roast Joan Rivers, Ruth Gordon bites George Segal’s tush, Queen Elizabeth praises “The 2000 Year Old Man,” and Sheldon Leonard rescues “Head of the Family.” PLUS: Iron Balls McGinty! Monty the Talking Dog! The late, great Edith Head! Mickey Rooney sends up Ben Turpin! And the legend of Le Petomane!