old hollywood for beginners

there was a time when i really didn't like (or thought i didn't like) old films. i found them dull, boring and i just couldn't concentrate on them. then i saw 12 angry men and LOVED it, which really surprised me, so i watched a few more (sunset boulevard, vertigo) and realised i just hadn't found any old films that i'd really loved, and now i ADORE old hollywood. so i thought i'd make this list for people who think they don't like old films and now i'm rambling so i'll stop.