[ralferoo]

Reminds me of a similar misunderstanding in Casablanca, where most people quote the line as "Play it again, Sam". In actual fact, the lines in the film are "Play it once Sam, for old times sake." "Play it, Sam." and "Play it again" (without Sam).

[dotancohen]

Another very well known misquote is "Beam me up, Scotty".