I can't believe no one posted The Umbrellas of Cherbourg (1964).  Probably my all time favourite film!  Oh well, you snooze, you lose...
Oilgun, that's my fault.  I posted 
Unsinkable Molly Brown, because it was the only film I recognized on IMDb's list of "U"s for 1964.  
The Umbrellas of Cherbourg wasn't on the list!  I much prefer that film, too.  I think I'll go back and change it...Debbie Reynolds out, Catherine Deneuve in.