Everyone complains about how bad their teachers or lectuers are, so this is your chance to share it with us. I will go 1st.
This is my lecturer who "taught" me some programming stuff 2 years ago. We call him scratchy because he scratches his hair 64 times in 50 min. Yes I counted every single one of them cause I was this bored.
Here is a video of him trying to do some experiment, and it went wrong, explosively wrong. Start watching the video at 3:00 min