OK, here's some more Let's Plays:

Perfect Dark (XBLA version)
Ar Tornelico 2
Spore
Eternal Poison

The two JRPG ones are done by the same guy that did the Persona 4 Let's Play.

How to back up your DS games - This is pretty dang handy, and looks legit, too (should be if it's from Kotaku).

WWII is worst show ever - so full of plot holes and stuff.

Shatner steals Nimoy's bike - this is pretty funny.

Three-year-old plays Portal (and some other game first) - I have to get that game when I get a new computer, so I can not be dumber at thinking with portals than a tot.

Touhou character sorter - This. Awesome. DO!