The dancing wretch easter egg on Gears of War 3's Checkout multiplayer map is cool, but it's not exactly practical. You jump through the hoops Epic has laid out and are rewarded with the bizarre sight of a wretch in a top hat, grooving to a beat that only it can hear. The Cluckshot easter egg, on the other hand, is all about unleashing the awesome power of the chicken.
The above video breaks down exactly what you have to do to get your hands on a Cluckshot, a unique weapon which is exactly what it sounds like. The whole thing spans a series of chapters during Act 4, and it can only be done on Insane difficulty.