Sigourney Weaver recalls being told by a very misguided college professor that she would "never get anywhere" in show business. Her latest film, "Avatar: Fire & Ash," is in theaters December 19th. #Colbert #Comedy #SigourneyWeaver #Avatar #AvatarFireandAsh #Film #Movies #StephenColbert #TheLateShow Subscribe To "The Late Show" Channel: http://bit.ly/ColbertYouTube Watch full episodes of "The Late Show": http://bit.ly/1Puei40 Listen to "The Late Show Pod Show" podcast: https://link.chtbl.com/