How To Upgrade To Ubuntu 11.04 Natty Narwhal (With Or Without An Internet Connection) [With Videos]

Since a lot of people want to upgrade to Ubuntu 11.04 Natty Narwhal already, I though you'd like to see a video (well actually 2) on how to upgrade to Ubuntu 11.04. Remember that starting with Ubuntu 11.04, you can upgrade using the Live CD too.