The course from Fall 2011 including video streams, slides and assignment are available via iTunes in high resolution and in lower resolution. If possible try to use the HD version. The SD resolution might not be perfectly readable when screen shots of Xcode are displayed.
Sample code and slides are available directly at Stanford.
From July to August 2012 the course is rerun accompanied by peer collaboration on Piazza.
Additionally the course from Fall 2010 is still available.
