Ask HN: Is there money in making video tutorials on YouTube?

I know there are a few companies like Treehouse and Code School doing video tutorials with a subscription based model. What I'm wondering is if there is a big enough market for video tutorials to make money off ads on YouTube. Anyone know what the CPM is like? I'm funny and creative enough to add some value to a dry tutorial, but I'm a bit lost in evaluating the market opportunity. I see a bunch of mediocre tutorials out there, is there an audience for better ones? Any other thoughts on it?