Quality watching. If you watch his older videos, you'll find he talks more like a "normal" person. He started talking in his own funny way, and that really helped him take off. Doesn't take himself too seriously. As an Australian, I respect that.
I actually got to meet him two weekends ago. He was at Cordova raceway getting his 8 second license. His wife and kids were there too. Very mellow people. Very cool.