The earliest movie android I can remember is the Yul Brynner character from Westworld. Are there any earlier examples? Please exclude those robots that are clearly distinguishable from human (unless damaged or otherwise revealed).
closed as too localized by Gilles Aug 15 '12 at 21:20
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As long as you mean "things called 'robots' that look like humans", the answer is simple.
The first robots with a human appearance were also the very first things to be called "robots", in the play R.U.R. (Rossum's Universal Robots) by Karel Čapek. When the play premiered in 1921, it introduced the word into the world's vocabulary.
Westworld the film is 1973 (did he ever write it as a novel?). Star Trek (1966-1969) certainly predates this, there were numerous androids that were indistinguishable from human. But I suspect that even this isn't the earliest... I seem to remember a My Favorite Martian episode where he made a android that was the duplicate of himself, and though I've never watched much of it Lost in Space starts in 1965 so it's also a potential candidate.
Batman (TV) also started in 1966. Another with the potential to predate Star Trek's androids.
And that's just in film and television. Literature probably trumps anything from either of those.
If anyone can give episodes and airdates, you can put it in your own answer and take the reputation, don't feel the need to edit mine.