Warren W. Littlefield is a television producer. He was President of NBC Entertainment for eight years in the 1990s.As a Senior and Executive Vice President of NBC Entertainment, Littlefield developed many shows, including "Cheers," "Seinfeld," "The Cosby Show," and "The Golden Girls." He oversaw the creation of shows such as :The Fresh Prince of Bel-Air," Wings," "Blossom," "Mad About You," "Sisters," "Frasier," "Friends," "ER," "Homicide: Life on the Street," "Caroline in the City," "NewsRadio," "3rd Rock from the Sun," "Suddenly Susan," "Just Shoot Me!," "Will & Grace," and "The West Wing.'Littlefield has written two books about his time in television: "Top of the Rock: Inside the Rise and Fall of Must See TV," which was published in 2012, and "'I'll Be There for You': Talking About Friends," which was published in 2014.