The video we watched in class was really interesting. It was cool to see what the guy who made up lindens looked like.  His real name is Philip Rosedale, and he is the President of the Linden Lab.  In the video he was demonstrating Second Life to and audience at a conference.  He explained what second life it, that it is a virtual world that is all connected where real people create avatars to explore, meet other people, socialize and participate in group activities.  One cool thing that the video showed was when Philip Rosedale went to a club in Second Life.  There were about 20-30 other avatars already socializing together or dancing with each other when he arrived at the new location.  There was live music there where everyone could listen and enjoy.  The woman that was singing was sitting behind a piano on a stage.  The music was live so somewhere she was in her home singing and we could here it on Second Life.