You can watch this Star Trek Into Darkness deleted scene in which Chris Pine's Kirk shares a moment with a young character who has something in common with him.
Kurt Russell, ever the estranged father of Peter Quill, kept flubbing a line in Guardians of the Galaxy Vol. 2, calling his son Star Wars instead of Star-Lord.
With a big screen history stretching back to 1978, there are plenty of Superman movie fan theories out there, but here are some that actually make sense.