Well, let's perhaps make that another thread. Frankly, I can foresee such a thing as being traumatically difficult. My brain isn't always as up for a challenge as I am! (And so consequently, I become less and less so with age.) Look at how awful I am at anagrams without a few hints!
But listen, hey! I've got a better idea:
We'll post the actors in alphabetical order, but the next person has to guess the movie from which the image comes from!
Your last image would be from:
Singin' In The Rain
What film is this image from?