Ten Unimpeachably Good Movies?

I was trying to think of ten inarguably good movies that you could show any friend without worrying overly about whether they will like them. What do you think?

'The 39 Steps' (1935)

'The Philadelphia Story' (1940)

'The African Queen' (1951)

'Rear Window' (1954)

'Cat Ballou' (1965)

'The Taking Of Pelham 123' (1974)

'Jaws' (1975)

'Star Trek II: The Wrath Of Khan' (1982)

'Stranger Than Fiction' (2006)

'Fish Story' (2009)

O.