'The Sound of Music' secrets and trivia

3 of 16: Christopher Plummer (Captain Von Trapp) taught his on-screen daughter Charmian Carr (Liesl) how to drink. Carr was 21 at the time.

'I had a huge crush on him,' Carr told Oprah Winfrey. 'He was so perfect and he spoke with this perfect, British accent.'

(Pictured: Charmian Carr (Liesl) in a scene from 'The Sound of Music'.) ( Photo / Twentieth Century Fox Film Corporation / Robert Wise Productions)