Ned: Now, don't you tell me you don't remember me because I sure as heckfire remember you.
Real-life 'Groundhog Day'
Stephen Tobolowsky, who plays "Needle-nose" Ned Ryerson (BING!), said shooting the movie was sort of like being in it. Since every scene had to look exactly the same, they filmed each one repeatedly in different weather conditions – sunny, overcast, snowy. So the cast really did live the same day over and over again.
Murray's exact science
"Groundhog Day" was shot out of sequence. But Murray's character travels from dark and curmudgeonly to light and happy. According to Ramis, Murray developed a foolproof acting motivation method: When he attempted to explain scenes to Murray before the cameras rolled, Murray would interrupt and ask, "Just tell me - good Phil or bad Phil?"
What was left out?
Tobolowsky said there was a complicated scene that was meant to explain how everything in Phil's world would reset each morning at 6 A.M. They spent three days filming a sequence where Phil shaves his head into a mohawk and completely trashes his hotel room. Ramis realized that it was too long, so they scrapped all the footage. In its place, Ramis had Murray break a pencil, which he would find undamaged the next morning. It got the same idea across in one simple image.