I just watched a video from YouTube that presents Linus at Google Talk at their home base and talking about SCM. You can watch the video here (quite long, 73 minutes), but if you are a CVS/SVN users, please be prepare, as Linus REALLY REALLY doesn't like those two products, and insult them quite badly. Well, i found his reason does make sense, but i think that it depends on the situation on the projects and the organization. You should see it for yourself, and start thinking about it.
I got the video after i read this blog.