Re: Most interesting casting choice
Gary Lockwood, a big part of playing the character was being able to wear the silver contact lenses. Once it was discovered that he had trouble with them (Sally Kellerman didn't) it's kind of strange they didn't recast the role.
With the lenses in, he had to tilt his head back to see at all, it made him look like someone with bifocals.
It's easy to support someones beliefs if they are identical to your own.
Tolerating beliefs that you don't personal embrace, or even fully understand, is harder.