Thief (1981)

"I am the last guy in the world that you wanna fuck with."
James Caan plays the ageing, veteran thief and ex-con Frank, who's whole life have been led by rules and pefectly timing and together with his faithful partner in crime Barry (James Belushi) they have done their fair share of successful heists over the years.
But time does not stand by and wait, and Frank is one how knows that all too well, but when the offer of a lifetime suddenly comes by, thanks to a helpful local mob boss named, Leo (Robert Prosky), Frank's usually well planned schedule are about to be put on a dangerous test, as he now has to stand up to both the mob along with the corrupt police, who all wants in on the action.

Another Michael Mann 80s classic, and my second favorite of his films.
Thief really is a masterful crime/action movie, and even more impressive as it was his debut, and already by then Mann showcased many of his classic visual style and treats and along with a very powerful James Caan in the lead role as the diamond thief, Frank.
The one actor that kind of took me by surprise when I first saw it, was Robert Prosky as Leo.
As I have always seen him in far more family friendly, "grandpa" roles, so it was quite a change of scenery to go from that and watch him in a scene like this:
 
Also the film packs one of the coolest sounding soundtrack of the 80s, (somehow not everyone agrees on that I guess, as it was rewarded with a nomination for worst soundtrack/score by the Razzies).