I used to go to Esquimalt Senior Secondary when I lived in Victoria, B.C.
There was a teacher there who by all accounts was a drunken, bitter, vile-looking vindictive bitch. I forget her real name (it was something german)... we just all called her the dragon lady. A complete tyrant in the classroom, the common legend is that she was a nazi war experiment that escaped captivity.
She was a completely incompetent teacher... her basic claim to fame was that she was able to work her students harder than anyone else in the school. There was no scholastic merit in that, of course, just that she'd do daft shit like say "Read Julius Caesar by monday", after handing out the books on friday afternoon. So much for a weekend.
There were numerous times when she'd show up for class seemingly drunk. Those days just amplified the bitchfactor, 'cuz she would totally freak on us for making even the most innocuous noise (in retrospect, she was probably hung over!). To say that she was unliked was a major understatement. There were kids who seriously contemplated cutting the brake lines on her car.
Anyways, the end of the year rolls around and one guy gets a fucking awesome idea... he gets some of those little plastic nazi flags and sticks em in the plants all around the room, and convinces a bunch of people (myself included) to stand up and give her a hardy "SIEG HEIL!" and nazi salute when she walks in the classroom... ahhh, the look on her face still warms my heart.
The best part was, she wasn't there the following year... she was replaced by a guy from L.A. who was used to dealing with 'problem classes'. Noone said anything specific, but general consensus was that this guy was brought in because we gave the dragon bitch a breakdown and we needed to be reined in.
Turns out the guy was a helluva good teacher, probably the first time I actually ENJOYED english was in his class.
Moral of the story: We fucked up a teacher bad using psy-ops and were rewarded with a superior teacher. Try this at home, kids!