I use Instacast to manage my NSScreencast and Sketchcasts video subscriptions. It's a convenient way to search the descriptions, watch the videos, and keep track of what I've already watched.

I wanted something similar for Apple's WWDC videos but couldn't find anything, so I put one up at http://camazotz.com/wwdc/index.xml. It's an Atom feed for the years 2010–2014.

Gist of Ruby code used to generate the feed here.