I don't think you can put enough value
on familiar faces in a film.
What does the sentence means?
Thank you :D
'Can not put enough value on' means that it is invaluable - or - immeasurable.
In this sentence, the point is being made that 'familiar faces in a film' will give that film many benefits. For example: people will come to the movie to see their favorite movie star; people will think the film is good because the star wouldn't make the film if it wasn't good; the film may be given a larger budget because of the movie star's involvement; and the film may actually have better acting because the star has more experience and skill.
I hope this helps you.