And it’s Johnson, Johnson with the Quaffle, what a player that girl is, I’ve been saying it for years but she still won’t go out with me —'
'JORDAN!' yelled Professor McGonagall.
'Just a fun fact, Professor, adds a bit of interest —

By the time she had interpreted Harry's dreams at the top of her voice (all of which, even the ones that involved eating porridge, apparently foretold a gruesome and early death), he was feeling much less sympathetic toward her.

There is a room in the Department of Mysteries, that is kept locked at all times. It contains a force that is at once more wonderful and more terrible than death, than human intelligence, than forces of nature. It is also, perhaps, the most mysterious of the many subjects for study that reside there. It is the power held within that room that you possess in such quantities and which Voldemort has not at all. That power took you to save Sirius tonight. That power also saved you from possession by Voldemort, because he could not bear to reside in a body so full of the force he detests. In the end, it mattered not that you could not close your mind. It was your heart that saved you.

Harry witnessed Professor McGonagall walking right past Peeves who was determinedly loosening a crystal chandelier and could have sworn he heard her tell the poltergeist out of the corner of her mouth, 'It unscrews the other way.

Hello, Professor McGonagall,” said Moody calmly, bouncing the ferret still higher.
“What — what are you doing?” said Professor McGonagall, her eyes following the bouncing ferret’s progress through the air.
“Teaching,” said Moody.
“Teach — Moody, is that a student?” shrieked Professor McGonagall, the books spilling out of her arms.
“Yep,” said Moody.
“Moody, we never use Transfiguration as a punishment!” said Professor McGonagall weakly.

Killing rips the soul apart.