Comment by molticrystal

I always loved the easter eggs and art that some chips have included on the circuits, most of which has never been seen and will never be seen by anybody but the designers.

Here are some examples:

http://smithsonianchips.si.edu/chipfun/graff.htm

https://en.wikipedia.org/wiki/Chip_art

My favorite has always been Wally/Waldo from Where's Wally.