Really great movie.
Everyone that I know who has seen it was impressed.

Clint Eastwood plays this grizzly old man
What a stretch right?

That's a joke of course. Eastwood is an incredible actor and the character is very complex. His wife has passed away and his sons have families of their own and to be honest they have their heads up their own butts. Too busy for the old man and Eastwood's character isn't what most would call "easy to love" they pretty much don't bother.
Superficially he seems like a bitter old man but you find out there is a lot of pain, remorse, anger and passion behind his actions and outlook.
The movie feels very real and toward the end I had tears steaming down my face.

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Here is the official synopsis off the back of the DVD

Korean War vet and retired autoworker Walt Kowalski doesn't much like how his life
or his neighborhood has turned out. He especially doesn't like the people next door. Hmong immigrants from Southeast Asia.
But events force Walt to defend those neighbors against a local gang that feeds on violence and fear.

For the first time since Million Dollar Baby Clint Eastwood works on both sides of the camera,
winning the National Board of Review Award as Best Actor for his bone deep playing of Kowalski.
Burnished with experience, grace and gravitas into a "prime vintage Eastwood performance."

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There is so much more to it than I have mentioned. I should put in that the namesake "Gran Turino" is in reference to a car.
Other than that? It is one of those movies you just HAVE to see.