I never knew about a lot of these. Some pretty cool stuff, though they aren't Gino's famous Surfboard Etch-A-Sketch or the classic "BoRyan and the Magic Sword" Site Search easter egg.
10 awesome Internet Easter eggs
I'm actually wondering why I never tried entering the Konami code on a webpage, since I secretly do it on most DVDs...
And still nobody has found either of the two Timely Persuasion easter eggs, hint hint.