For a while the best/fanciest digital cameras had three CCDs, one for each RGB color channel. I'm not sure if that's still the case or if the color filter process is now good enough to replace it.
While the death of Azaria Chamberlain occurred in 1980, it was not common knowledge outside of Australia until the movie A Cry in the Dark released in 1988. As this cartoon was originally published in 1985 most readers would not have recognized the "a dingo ate my baby" meme.
Not really an Easter Egg, more just an interesting fact. In the movie Youth in Revolt there is a scene where the two main characters purchase a camper. The man they buy the camper from is played by Michael Collins, the third crewman of Apollo 11 who remained in orbit while Neil Armstrong and Buzz Aldrin landed on the moon.
This past summer my GF took a trip to Canada and took her laptop. To preempt any fuckery at the border when she came back into the US I full-disk encrypted it with Veracrypt and I burned an emergency recovery DVD at the time of encryption. She didn't have any trouble crossing back in, but better safe than sorry.
It has no leg yet.