For all Nexus subscribers who received the 4.2.2 update here is a nice website video demonstrating the new features and how to use them
http://www.gottabemobile.com/2013/03/25/android-4-2-on-samsung-galaxy-nexus-review/
http://www.gottabemobile.com/2013/03/25/android-4-2-on-samsung-galaxy-nexus-review/