This was a very silly one. I was streaming my colouring process, but my computer completely froze up and I had to manually restart. I lost about 30 minutes of work, but I felt bad about losing that footage. Some people find it helpful, and it's great to know that people enjoy watching them.
My Ustream site is here: ustream.tv/channel/mike-draws-sometimes and as of now I only have one video up there.