The solution to this has just been published.
Over Christmas Rullsenberg and I managed to get every pairing, from Humphrey Bogart and Ingrid Bergman to Bill Murray and Scarlett Johansson.
But then came the challenge of the grid. Films in chronological order? Meshegas. I did make a guess at a Humphrey Bogart quote but could not justify it.
"Here's looking at you kid".