Can you name all the movies that included...
Spencer Tracy and Katherine Hepburn? Bill Murray and Dan Ackroyd? Corey Haim and Corey Feldman?
I wrote a webapp with the Wolfram Language which takes two actors as input, and which lists back all the movies they were cast in together as output.
I call the app Twogether, and you can find it here:
https://www.wolframcloud.com/objects/mitchell/twogether
Please enjoy! Thanks.