A few classes I've blogged about are:
Calligraphy, Floral Arranging & Watercolors, and Illustrator.
Well, I've stumbled across a website that is just dreamy. Skillshare is a site that brings a whole bunch of teachers straight to you. You get one free month, then it's $8/month for a year. Even if you watched one video a month, it would be well worth your time and money. A few classes that are on my radar are: Chalkboard Lettering, Illustrating Flowers and Photography for Bloggers.
I also like that anyone can submit projects to teach. If you're pretty passionate about a skill, you can share it and make some extra cash. There are a lot more design classes offered than anything else, but hopefully there will be some more in the other genres soon, like sugar cookie decorating or screen printing t-shirts or letterpress.
If any of you are withholding some awesome sites similar to this, I'm not mad. BUT I will need you to tell me about them, STAT. STAT means now! (Gah, I miss Dwight!)