Lurker
Beating Psycho Mantis by switching controllers. Its probably the most famous easter egg ever, s its actually made the real way of doing things an easter egg.I also like the conversation that comes up if you do this when fighting Screaming Mantis in MGS4. That series is great when it goes all self-referencing.
And also from that series, I liked Peace Walker's Monster Hunter missions.
I have fond memories of the plethora of non-game-breaking glitches in Oblivion. Special mention goes to the guards AI and the random murders that ensue, and that one time the Adoring fans arms spaghettified as he fell off Dive Rock, leaving his hands behind.
As for easter eggs, probably the sequence break conversation in Metroid Fusion, with the [[Boktai Gun Del Sol]] in Metal Gear Solid 3 being a close second.
Favorite easter egg? Not sure. But my favorite glitch has to be in the endgame of Quest for Glory: Shadows of Darkness.Explanation
HIGH IMPACT SEXUAL VIOLENCE
0:53
ALL CREATURE WILL DIE AND ALL THE THINGS WILL BE BROKEN. THAT'S THE LAW OF SAMURAI.
Fandom Heretic
As for me... favorite glitch, or one I've gotten the most utility out of, is probably from Ratchet And Clank Going Commando, where entering first-person mode and throwing the wrench in the middle of double-jumping can let you climb walls infinitely. Good for sequence breaking and makes certain Platinum Bolts easier to reach, but I think you have to have beaten the game at least once to unlock FPS mode anyway...
Next up, would be the Mine glitch in Fire Emblem Blazing Sword.
Actually, now that I think about it, I might have a favorite Easter egg: Some literal eggs. Specifically, Stop 'n' Swop.
Yes, they're useless. But I cannot tell you how satisfied the preteen in me was when I was finally able to go to Wozza's cave, jump up to the small ledge, and waltz right on up to the Ice Key.
I love the rest of the codes in that game, too.
"Proto-Indo-European makes the damnedest words related. It's great. It's the Kevin Bacon of etymology." ~Madrugada