I recently read Superman: Birthright by Mark Waid and Leinil Yu (I know, I'm late to the game as always). Besides the fact that it was a wonderful Superman story, I couldn't help but notice the wall decorations in young Clark Kent's room. Bruce Lee, Akira, and an X-wing and Darth Vader's TIE Fighter - TIE Advanced x1:
Star Wars is everywhere.
If you haven't read the book yet, you can get it on Amazon.