Movies that could never be made today

[whell]

There are a number of movies that are absolute classics that could never be made today. There are obvious examples of this: the Cecil B Demille epics come to mind, due to the expense of such productions in today's dollars.

Less obvious examples would be those where today's Hollywood would be less willing to take chances on. I was watching Inherit the Wind last night, and couldn't help but enjoy it once again, but also couldn't help wondering whether a movie like it would ever make it into production today. The actors/actresses are actually required to act, the film moves along on the power of their individual skills. They are, of course, supported by an excellent screenplay, which touches on a number of themes to draw their viewer in. I'm not sure how the theme of religious tolerance would be treated today, either.

What classic films do you believe wouldn't stand a chance in today's Hollywood?