That's why Linus, not Stallman, is the first name that comes to my mind when I think about FOSS. He's headstrong, sometimes a bit mean, positively pragmatic but also handsome, and -- oddly -- very likable. He's a bit like Steve Jobs, in a twisted way.
He definitely has charisma. I remember seeing a video of him and Stallman on stage, and Linus' kid comes on stage and starts playing with Linus while Stallman is ranting about freedom.