While Michael Keaton's return to prominence has more or less cooled by now, it was pretty awesome to see him return to superhero movies as the Vulture in 'Spider-Man: Homecoming.' And an eagle-eyed fan believes they may have found one of Marvel's famous easter eggs which honors his contributions to the genre.
In the scene where he first faces off against Spider-Man, Keaton, who played Batman in the Tim Burton films in the 1980s, is briefly seen silhouetted against a full moon, forming an image eerily similar to DC's famous bat-signal which calls the caped crusader to action. It's unclear if this was an intentional easter egg by director Jon Watts or just a coincidence, but it's pretty cool either way.
However, it wasn't the only reference to Keaton's past work in the film. Star Tom Holland described a deleted scene after he saves Vulture from the burning wreckage of his own flight suit and the two have a brief, witty exchange. "
Though notoriously difficult to work with, Keaton made a huge impression on Holland, who complimented the older actor on his intensity. "