In this age of everyone being able to upload any video at any time, there's a commentary or reaction track or video to everything in life. Tub Girl, Gwen Steffani songs, capturing of terrorist leaders -- you name it, and there's someone talking over it.
I like commentary when it's coming from someone involved, and not just a kid on YouTube. Bayonetta director Hideki Kamiya thought he'd do his own commentary for Bayonetta, just like the kiddies on the internet do. On the Platinum Games blog Kamiya will be playing through the entire game, adding his commentary to everything that comes up. There's two videos up now, but he's in it to win it, and will go through the entire game eventually.
I watched part two this morning (above, in Japanese with English subtitles) and enjoyed hearing Kamiya's insights on this game.