Held in mid-November in San Jose, California was the annual developers meeting for 2011. The videos from this summit are now available online for anyone to watch. It took a while to get the videos out the door, but they are of nice quality and edited.
Those interested in seeing all of the 2011 LLVM Developer Meeting videos can see the YouTube video play-list. Below are some of the videos I found to be most interesting.
Intel talks about their OpenCL SDK and vectorizer compiler.
A FreeBSD developer talking about the path of getting LLVM/Clang integrated into FreeBSD base as the default compiler to replace the GPLv3-licensed GCC compiler.
Qualcomm has ported LLVM to their Hexagon DSP.
Google likes LLVM's Clang C/C++ compiler a lot for their Chrome/Chromium web-browser. They're using it to continually build the open-source web-browser, with version 15 it's now the default compiler used on Mac OS X, and in this video it's mentioned why they like the Apple-sponsored compiler.
Google also likes Clang for use by RenderScript on Android.