Name the screenwriter

Hal Kanter?

Nope

Is the picture with James Stewart from Dear Brigitte?

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If I answer a game thread correctly, just skip my turn and continue with the game.
OPEN FLOOR.

Black Widow (1954) + How to Be Very, Very Popular + Dear Brigitte (uncredited) + Flaming Star =
Nunnally Johnson





OPEN FLOOR

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"Film is a disease. When it infects your bloodstream it takes over as the number one hormone. It bosses the enzymes, directs the pineal gland, plays Iago to your psyche. As with heroin, the antidote to Film is more Film." - Frank Capra

Your first shot isn't showing, but I'm pretty sure the bottom shot is The Thomas Crown Affair, which would make the answer Alan Trustman?

You got it.

Walter Hill?

You got it Torgo, your turn

Woohoo!
Someone else can go. I'm unable to post pictures right now.

CAn't see the second shot.

Ditto

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I’m here only on Mondays, Wednesdays & Fridays. That’s why I’m here now.

Here's the third shot again:

Phil Silvers, Doris Day & can’t remember the name of the guy to her left.

James O'Hanlon?

You are correct Claire...James O'Hanlon

That looks like David Copperfield in the top shot, but I wouldn't bet the farm on it. The lady in the middle looks kind of like Carrie Snodgress but I wouldn't bet the farm on that either. Don't recognize the Nick Nolte movie, but he looks pretty young there, I'm suspecting it might be Under Fire, which would make the answer Clayton Frohman?