Choosing a focal length for video

My first "talking head" video that I've uploaded to YouTube. In this video I explain why I choose to use the Sigma 16mm f1.4 lens for these things.

There's a fair number of things to improve going forward though - mostly lighting and audio but I'm hoping to get there soon.

As always, do let me know if you have any ideas or suggestions - I've love to hear them. Grab me on Twitter or comment on YouTube.