Looking real close, I can make out George Hamilton, Eli Wallach, Joe Mantegna, C-3PO, and a Wookie. I suspect that the images may have been added sometime after the film's original release.
All I have is a guess that they're allegorical, demonstrating that Michael's actions have left him alone, even when others are nearby. That might echo the last shot of the surprise party scene.
Well, it could be allegorical. However, those people in that scene are hardly detectable by the average viewer.
"Generosity. That was my first mistake." "Experience must be our only guide; reason may mislead us." "Instagram is Twitter for people who can't read."
