top three moves

Tootsie
Dog Day Afternoon
The Sting

The Hudsucker Proxy (1994)
To Be or Not to Be (1983)
Tootsie (1982)

The Best Little Whorehouse in Texas
The Muppet Movie (love Doc Hopper!!)
O Brother Where Art Thou / The Last Supper (tie)

HM: Dog Day Afternoon, Tootsie, When a Stranger Calls, The Sting

Dog Day Afternoon
O Brother Where Art Thou?
Rescue Me

I liked his "moves" on the TV show NCIS with Mark Harmon, etal.
Also I think he was the dad in one of my sentimental favorite "moves" Home For The Holidays, with Holly Hunter and RJ Downey - and the wonderful Anne Bancroft.

o brother where art thou?
the muppet movie
solarbabies

I have to add Dark Night of the Scarecrow (1981) to these great suggestions.

Huh? No one ever says, let's look for a great Charles Durning movie, he just shows up in other people's flicks.