W Magazine has a feature on the famous spawn of celebrity, currently rocking out in the dim spotlights of downtown clubs. Amongst them are CBS CEO Les Moonves's son (Chief), Susan Sarandon and Tim Robbin's son (The Tangents), Michael Keaton's son (The Hatch), Jann Wenner's son (The Ellis Unit), Ellen Barkin and Gabriel Byrne's son (also in the Ellis Unit), and...you get the picture. Susan Sarandon, who makes an attempt at attending all of her......