Their only bankable movie star was the four-legged hero Rin Tin Tin. But in April 1923, four visionary brothers from Youngstown, Ohio, officially incorporated their new motion picture studio. By the end of the decade, Warner Bros. hit it big with the sound of The Jazz Singer, the gangster personas of Edward G. Robinson and James Cagney, the kaleidoscopic escapism of Busby Berkeley, and the lurid melodramas of taboo and defiance. Their films became a microcosm of America's cultural values, mirroring - and challenging - the attitudes of the era in which they were produced. Directed by award-winning filmmaker and critic Richard Schickel and narrated by Clint Eastwood, "You Must Remember This" celebrates 85 years of the legacy and evolution of Warner Bros. Clips from literally hundreds of films; archival interviews; and on-camera discussions with Martin Scorsese, Steven Spielberg, George Clooney, Warren Beatty, Clint Eastwood, and Sidney Lumet, among many others, illuminate this rich story - giving the history of 20th-century America on the big screen.

Tuesday-Wednesday, 9/23-24/08 from 9-11 p.m. ET and Thursday, 9/25/08 from 9-10 p.m. ET