Watching Notch's code stream "Making Prelude of the Chambered" (http://www.youtube.com/watch?v=rhN35bGvM8c&t=10m05s&hd=1) was fascinating.
Are there any other sites like WatchMeCode.net. I'd like to watch developers screencast their workflows, especially for different languages. Watching a top OSS contributor work (jumping from IDE, to test, to GitHub) would be awesome.
That said - Destroy All Screencasts is great (https://www.destroyallsoftware.com/screencasts), and PeepCode has terrific Play by Play stuff with Gary Bernhardt which I can't recommend enough: https://peepcode.com/products/play-by-play-bernhardt.
He also has Ryan Singer and Yehuda Katz doing their thing... great stuff.