In this clip from Tribeca Talks® Directors Series with Clint Eastwood & Darren Aronofsky, Eastwood has the audience in stitches as he explains how he learned not to yell "action!" back in his Rawhide days.
Also from this talk: Clint Eastwood on Difficult Actors: "I had a guy I wanted to punch out one time."
Watch the Livestream of the entire Eastwood/Aronofsky conversation here. (It's really good.)