I was not aware that it was Linus Torvalds was the man behind the git version control system . We may have seen in various places about git-hub . Have you ?

Git hub is the hosting provider . The below video is for you, that I have found from youtube .

There are lots of other version control softwares available. He ( Linus torvals ) giving a brief introduction about all . You can get more details from http://git-scm.com/ .