You haven't seen Nashville, The Duellists, Thieves Like Us, Southern Comfort, Mrs. Parker and the Vicious Circle, Two Days in the Valley...
Sergeant Pepper's Lonely Hearts Club Band, Old Man and the Gun, or the episodes of Big Bang Theory with Penny's dad?
I just cannot believe this. It's too eclectic a list of good films.
Whenever I joke about Grandpa on Deadwood, HE was grandpa.