I love films set in the 40's and 50's - they ooze style - the suits, the cars, the guns!
A lot of films set in the 60's and 70's appear quite sleazy and grim (not a sweaping generalisation - just an observation)
A lot of movies set in the 80's have a real naff fealing to them - mobile phones (sorry cell phones for our US cousins), the size of house bricks etc.
Does anyone else have a favourite era and why?