The Fade Out is excellent, proper Noir. I devoured it in a couple of days about a month ago. Criminal, Fatale and Kill or Be Killed are currently sitting on Comixology waiting for me, looking forward to starting them.
Is this just for Brubaker, or Crime comics in general? Because two other books I've been reading are:
Richard Stark's Parker
And Stray Bullets
They're both on my list of all time greats, for writing and art, couldn't recommend them enough.