Hosted by Ubuntu video, this episode from the Lab Rats walks you through a basic Ubuntu install and debates whether Linux is for Super Geeks, regular geeks, or has finally evolved into a "grandma-friendly" OS.
Skipping through the Internet (I do not "surf"), I found this Ubuntu video, "Lab Rats - Intro to Linux and Ubuntu." The Lab Rats are a quirky, Canadian duo who produce technology videos on the Web. This one is a bit rambling at 21 minutes, but engaging and informative. They walk newbies through an install of Ubuntu, give some general Linux background, and ask the burning question, "Can my Nana install this?" And if you like cats, there's a nice feline cameo. Something for everybody!