Easter Eggs, Sunny Side Up (link to this video)
Metal Gear Solid 4 was pretty light on irreverent codec conversations. As a point of comparison, here's a collection of a few of MGS 2's more absurd moments. Oh that Kojima.

GLaDOS GPS (link to this video)
This one is for all those robot fetishists out there. You know, the guys who wish they had a real GLaDOS ordering them around on a daily basis, like a wife with lung cancer.

LEGO Donkey Kong: The Stop-motion Video (link to this video)
And old one, but still great--Donkey Kong as presented in block form.

Kick, Punch, It's All in the Mind (link to this video)
This on-the-fly remix of Parappa's first song sure brings me back. To a time when rhythm games were unknowingly rudimentary, that is.