My 5 favorite neo noir movies with trailer are:

number 5 :

Ethan and Joel Cohen, "No Country for Old Men" 2007,

number 4:

Christopher Nolan, "Memento", 2000

number 3:

Curtis Hanson,  "L.A. Confidential", 1997

number 2:

Roman Polanski, " Chinatown" 1974

...and number 1:

Quentin Tarrantino, "Pulp Fiction", 1994