Category "adaptation-2002"

Why does the movie "Adaptation." have a period in its title?

I noticed on IMDB that Adaptation. has a period at the end of its title. This can also be seen on its poster. Usually titles and headlines don't use periods

Adaptation (2002): "High sixes against a mil-five"

In Charlie Kaufman's Adaptation, Donald tells his brother that his agent can get him "high sixes against a mil-five" for his screenplay... but what does that me