I want an old movie to watch ...What do u recommend? (40's-60's, please)?!

I want an old movie to watch ...What do u recommend? (40's-60's, please)?

I've seen...
Gone with the Wind
Rebel without a Cause
Giget
Gentlemen Perfer Blondes
Casablanca
Inmataion of Life
Ben Hur
12 Angry Men
Mr. Smith goes to Washington

"Breakfast At Tiffany's" with Audrey Hepburn
"Roman Holiday" with Audrey Hepburn
"Gone With The WInd" (my favorite!!)
"Splendor In The Grass" with Natalie Wood
"Seven Brides For Seven Brothers" a wonderful musical.