Worse: Recognizing video from a previous lesson plan.
The worst: Knowing that it's not a very interesting video.
The good news: I got to work today.
I suppose I shouldn't complain. It is the middle of summer. The only school open is the continuation high school. Since there aren't that many teachers there, it's lucky that I'm getting any work at all.
Today I covered the U.S. history classes. The teacher left a video on Thomas Edison. As soon as I started it I remembered it. I had shown this video to this teacher's classes last year.
On the bright side, it was only 55 minutes long. And I got to see the whole thing.