“Gently Down the Stream,” a wedding comedy starring Robert DeNiro and Diane Keaton, has a new title and an added player. Robin Williams has joined the cast that also includes Katherine Heigl and Topher Grace, as well as Susan Sarandon and Amanda Seyfried. According to the imdb, the title may have also changed to the generic sounding “The Wedding.” How original! This means that Justin Zackham’s movie now has four past Oscar winners–DeNiro, Keaton, Williams and Sarandon. The weirdest thing is that Heigl is billed with DeNiro and Keaton in the most recent poster. Getting older is just full of indignity, isn’t it?