I don't think I have ever seen a thread like this, but if one exists its either long gone or I stole their idea subconsciously.
But that doesn't matter! I came up with a little thread game. You post a picture of your favorite sim and the simmer below you says the actor or actress that would play your sim in the movie of their life!
I'll start, here's my sim I just made today - a private detective named Stephanie Halloway:
Who would you have play her?