i remember when i was younger i found this easter egg entiraly on accident, once, then never again, which made me wonder, how many people ran into this secret to? (not cause you looked it up online but generaly found it by accident)
9 Video Game Easter Eggs That Took Years to Find | Cracked.com (http://www.cracked.com/article_18801_9-video-game-easter-eggs-that-took-years-to-find_p1.html?wa_user1=1&wa_user2=Tech&wa_user3=article&wa_user4=moreon)

already read it.

also, i found chris's room in the SNES version years ago, i dont think that editor even played the game.

I'm not so sure that I'd count the Duck Hunt thing as an easter egg, to be honest.

Honestly, if I ever came across easter eggs in games, it was completely unintentional, and I had no idea about it. I rarely fool around with games that much to achieve the kind of results these guys get to activate the eggs in question, honestly. *shrug*