Great Post, Easter Eggs are neat to learn about and even cooler when discovered! My favorite was when I discovered that I could use alternate vehicles in the Cruisin' racing series by pressing the change view buttons, I like using the hippy bus.

I never knew about #6 in your list. Old school Atari is a personal favorite of mine so I will be trying this one out for sure on my WiiU copy of Black Ops 2.

Thanks for posting, Upvoted!