For the first time, a clear majority of Americans (58%) say marijuana should be legalized according to a new Gallup poll. Not surprisingly, many famous Americans have spoken out on their use of the drug, whether it be past or present. Oprah Winfrey recently visited Andy Cohen on "Watch What Happens Live" on Bravo and when asked the last time she smoked pot, she responded, "Uh...1982." Then, she followed that up with, "I hear it has gotten better." (Mike Windle/Getty)