Game legends

Urban game legends

Can anyone verify any of stpries in above link? By verify I mean either point to a legitimate documented proof or have seen it with your own eyes and have screen shots that verify but do not look to have come off any of their 'proof?' I am curious The WoW stuff sounds like something out of a .hack anime.  The Mario stuff almost sounds like a slam together job using a background intended for another game.   Yes developers did used to put little games or easter eggs in apps because it is fun and because they were bored. But I have not heard of that particular one in Excel 95. So anyone?