Clips from television's 50 best series, as selected by the editors of TV GUIDE in conjunction with the magazine's 50th anniversary. Included: "Seinfeld," "I Love Lucy," "The Honeymooners," "All in the Family" and "The Sopranos." Also: comments from Rob Reiner, Mary Tyler Moore, Dick Van Dyke, Rosie O'Donnell, William Shatner and Gillian Anderson; interviews from the sets of "Law & Order" and "The Sopranos."