Recent search on iTunes listed the Madison Area Technical College classes on iPhone development by Dr. Brad Larson Session on OpenGL ES 2.

I was always disappointed with Apple Keynote pages. It allows you to stream and watch the videos with QuickTime which is not great for streaming and videos are not HTML5 yet.

A quick obj-c cheat-sheet for the beginners. Scribd link This is taken from RWTH-iPhone Application Programming. You can also download complete videos from iTunesU.