Re: Easter Eggs (SPOILERS)
Just reread Birthright tonight. The DCU references in that book are perfection. Not hit-me-over-the-head-with-it like a Marvel movie but not as hidden Easter Eggy as this one had.
Joss Whedon's MUCH ADO ABOUT NOTHING is the cinematic equivalent of Tony Stark building an Iron Man suit in a cave with a bunch of scraps