I Am Legend Easter Egg - World's Finest Poster

When Robert (Will Smith) is hunting and about to shoot the deer, but is interrupted by the hungry lions, he backs off and calls Sam. At this point the camera zooms out and you can see a big poster in the background. Pretty close near the left of the screen with a Superman symbol inside a Batman symbol as a teaser for a movie.... Foreshadowing!?! or just a funny jester to mock an Internet rumor!?!? Pretty cool either way.