Both sides of the phone call at the beginning of the movie were recorded together, instead of the more common practice of adding in the other side later. See more

Goofs

(at around 7 mins) Right after Hugh asks everyone at the table about their phone reception but before he starts talking about the comet from the 1930s there is a brief shot of Lee saying something. A cameraman can be seen crouched behind the sofa in the living room to the left of Lee's head, and he stays there for quite awhile. See more