the best anti-hero movie characters

Sam Spade, Rick Blaine, Harry 'Steve' Morgan ... as played by Bogart.

Selena Kyle (at least, the Michelle Pfeiffer one).
Hannibal Lecter
Wednesday Addams
The T-800 (Terminator)
Wolverine

Jackie Scanlon (Sorcerer)
Leon (The Professional)
Martin Blank (Grosse Pointe Blank)
Harry (The Devil at Four O'Clock)
Boo Radley (To Kill a Mockingbird)

If you go to Wikipedia for anti hero, the first picture is Clint. That's who I always think of.

Might want to add some anti heroines. The last 10 years their been a big rise in movies with those.

D-Fens in Falling Down

Ellen Page as Boltie in Super (2010)

Although she wasn't so much heroic as psychopathic. But only Ellen Page ( before mental illness overtook her ) could make a homicidal maniac endearing.

Paul Kersey(Charles Bronson) in the Death Wish movies.

McMurphy (One Flew Over the Cuckoo's Nest)