Here is a clickable list of watercolor videos on other sites.  Most of them are excellent watercolor painting lessons. The rest are excellent demonstrations (videos of painting being done without added words or text). The "demos" too, are well worth watching.

I have tried to make the following list pretty comprehensive. Obviously some are going to be overlooked. If you see, (or have made), watercolor videos which should be included here, let me know using the contact button at left.