Guest : There are actually websites devoted to movie goofs like the ones you mention. One of the best,
www.movie-mistakes.com, lists 80 (yes, 80) goofs in Saving Private Ryan, including the ones you describe. One of my favorites occurs in It's a Wonderful Life: in a street scene involving George Bailey, Bert, and Ernie, one of the pedestrians, a lady in a flower print dress, walks by, back and forth, about 5 times in the brief scene! Fortunately, if it gets by the director and others who watch the dailies, chances are (most of) the audience won't catch it either. I'd watched Wonderful Life dozens of times without noticing the flower print lady, and only became aware of it when I read about it.
[Edit: Made link active - HawKe]
I only noticed those two blatently obvious mistakes. I didn't know there were 80 of them! That's a cool website. I always like to take a critical look at things.</font>