Git: The Lean, Mean, Distributed Machine
http://www.slideshare.net/err/git-machine
"git The Lean Mean Distributed Machine By Chris Wanstrath anyway, i want to talk a bit about git today"
Hg-Git Mercurial Plugin - GitHub
http://github.com/blog/439-hg-git-mercurial-plugin
Why Git is Better Than X
http://whygitisbetterthanx.com/#easy-to-learn
"This site is here because I seem to be spending a lot of time lately defending Gitsters against charges of fanboyism, bandwagonism and koolaid-thirst. So, here is why people are switching to Git from X, and why you should too. Just click on a reason to view it. "