For R40, my "The Day After" stories:
I was Steve Guttenberg's stand in and was brought on midway through filming. I watched him go through the blocking for each scene, then while he went off to rehearse I would stand in for him while the camera crew adjusted lights, camera moves, etc.
Steve was a really nice guy, in fact about a month after production wrapped he sent me a nice letter that I still have today. All of the actors were nice, Stephen Furst (Flounder from Animal House) in particular. He only had a bit part but was on set for a few days and was so nice. I also liked John Cullum and Bibi Besch, who played the parents. Jason Robards and I had a couple of nice long conversations, and he was he was surprisingly soft spoken. He isolated himself in a completely darkened room before each scene, which I found fascinating. JoBeth Williams and John Lithgow filmed their scenes before I arrived.
The director, Nicholas Meyer, was a real womanizer and had different women with him everyday. Then his real gf showed up on set, wearing all white... on the dusty, dirty set of a nuclear disaster in Kansas. She would only speak to you if she deemed you worthy. The only thing she said to me was "Nick is so happy I'm here, he's been so lonely." I said nothing but did an internal smirk after she walked away.
My favorite memory was the day we shot under a bridge. It was a survivors' camp with hundreds of extras. It was a long day so catering served the best meal, mako shark (the poor extras got hot dogs) and great ice cream and snacks. And then, at about 1 am, the entire production shut down for about 2 hours and we had an impromptu pot party. There was music, booze and more food, and I got high with Steve and lots of other people. The extras must have surely wondered what the hell was going on, but they didn't understand how long the days were and how tough the shoot was, not to mention the subject matter. After awhile everybody chilled, even the extras. It was such a good time and got us through the rest of the night and shoot.
Someone in ABC's payroll dept. was ripping off the crew. I had just arrived and hadn't received my first check yet, but I overheard someone in hair and make up say "my paycheck is short again!" I didn't think anything of it at the time, but after I got my first check, sure enough it was short. I double checked my math, then contacted payroll, and the person went through what sounded like an accurate account of my hours worked for that week, including regular and overtime. I hung up resigned but dissatisfied, then rechecked my math and went through his words in my head. Then I realized he was only applying my regular pay for 4 days rather than 5. In other words, he was shortchanging me and other crew members 8 hours. I called back and said "I think you made a mistake...." and explained his error. He got irritated and said "oh all right, come in and I'll get you another check." By the time I got there he was all smiles as he handed me my check - I assume he was hoping I would think it was an honest mistake and that would be the end of it. The next day I told the make up person, and I assume she told others. My paychecks were never short again.
I really thought the movie was going to be a massive failure because some of the dialogue was just awful. But the magic of movie making saved it, and I think everyone was happy in the end and proud to have been a part of it.