Joss Whedon Audio Commentary song

As you all know, I'm a huge Joss Whedon fan. That being said, I'm likely to geek out over any tidbit of the now official Avengers director, so when I saw this video of Whedon singing a song about audio commentary, well, of course I was excited. So, check it out, it has the humor that makes Whedon famous, and ya know, it's musical, so that helps.