Still haven't seen Waterloo Bridge, but my wife tells me it gets shown on Chinese TV all the time.
My favourites are the German expressionist films in b/w:
Metropolis
Nosferatu
M
The Cabinet of Dr Caligari (my all-time favourite!)
+ some of the other classics:
All Quiet on the Western Front
King Kong
Casablanca
Plan 9 from Outer SPace (funniest film ever, especialy once you've seen Ed Wood)
and a few modern classics:
La Haine
Schindler's List
Elephant Man
Sin City