Marvel and DC love to pepper their films with clever and amusing easter eggs, and we can't really blame them. With such massive universes at their disposal, and a loyal fanbase always ready and willing to pick apart each new movie that they produce, it's no wonder that the studios enjoy sprinkling clever nods to the audience in all of their films. Over the years, there have been numerous easter eggs that have shown up, from blatant cameos to hidden clues that only the most hardcore of Marvel/DC fans would pick up on. Regardless, it's always fun to see what the studios come up with for their latest efforts and with Avengers: Age of Ultron now in theatres, and the DC Cinematic Universe about to unravel, we thought we'd go back and choose 11 of Marvel and DC's most obscure easter eggs that only hardcore fans would notice.