They seemed almost normal at the time but here's mine:
I can't really remember any weird teachers but I remember some weird things about them. There were a few who never taught us anything, like the English teacher who was just like a film critic (Barry Norman for any Brits who remember him), he never taught us anything excpet what he thought of various books or plays/flims made from books. We also had a physics teacher who spent most of the time chatting up the girls instead of teaching anything.

We had a Latin teacher who looked like Darth Vader after his helmet came off, same skin colour and everything, although he had more hair. He also had breath that could melt a polar ice cap so we spent lessons freezing in the winter due to having the windows open.

There was an RE teacher who had a nervous breakdown as she was extremely wet and couldn't take our mocking/questioning of religions.

And lastly (these are more incidents than specific teachers) we had a geography teacher who gave a months detention to a kid in our history class after he fired a pencil at the history teacher. The history teacher gave the kid a week's detention and the geography one gave him a month to punish him in advance in case he ever thought of firing a pencil at him. I don't think the kid ever had a lesson with that teacher in his school life so it seemed a bit mean. Then there was the science teacher who gave us all 100 lines of "I will not laugh in class" after we all cracked up when someone did the loudest fart possible in a very quiet part of the lesson. She never even cracked a smile.
(Lord of my Ring, Mon 14 Nov 2005, 12:32, Reply)