When Harry met the Dursleys:
For a full minute the three of them stood and looked at the little bundle; Hagrid’s shoulders shook, Professor McGonagall blinked furiously and the twinkling light that usually shone from Dumbledore’s eyes seemed to have gone out.
When Harry received his Nimbus:
DO NOT OPEN THE PARCEL AT THE TABLE. It contains your new Nimbus Two Thousand, but I don’t want everybody knowing you’ve got a broomstick or they’ll all want one. Oliver Wood will meet you tonight on the Quidditch pitch at seven o’clock for your first training session. Professor McGonagall.
When Hagrid gave her a kiss:
Harry watched Hagrid getting redder and redder in the face as he called for more wine, finally kissing Professor McGonagall on the cheek, who, to Harry’s amazement, giggled and blushed, her top hat lop-sided.
When she shed a tender tear:
Professor McGonagall was still staring at him, and for a moment, Harry thought she was going to explode, but when she spoke, it was in a strangely croaky voice.‘Of course,’ she said, and Harry, amazed, saw a tear glistening in her beady eye.
When she called Lockhart's bluff:
We’ll leave it to you, then, Gilderoy,’ said Professor McGonagall. ‘Tonight will be an excellent time to do it. We’ll make sure everyone’s out of your way. You’ll be able to tackle the monster all by yourself. A free rein at last.’Lockhart gazed desperately around him, but nobody came to the rescue.
When she really had no charm for Divination:
‘Ah, of course,’ said Professor McGonagall, suddenly frowning. ‘There is no need to say any more, Miss Granger. Tell me, which of you will be dying this year?’
And yet she was the first to comfort Sybill...
Professor McGonagall had broken away from the spectators, marched straight up to Professor Trelawney and was patting her firmly on the back while withdrawing a large handkerchief from within her robes.
When she rescued a certain ferret from punishment:
‘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.
When she put Umbridge in her place:
‘Now, the Vanishing Spell –’‘Hem, hem.’‘I wonder,’ said Professor McGonagall in cold fury, turning on Professor Umbridge, ‘how you expect to gain an idea of my usual teaching methods if you continue to interrupt me? You see, I do not generally permit people to talk when I am talking.’
When she was knocked out by stunners:
Halfway between cabin and castle the red beams collided with her; for a moment she looked luminous and glowed an eerie red, then she lifted right off her feet, landed hard on her back, and moved no more.‘Galloping gargoyles!’ shouted Professor Tofty, who also seemed to have forgotten the exam completely. ‘Not so much as a warning! Outrageous behaviour!’
When she totally got Neville:
‘Humph,’ snorted Professor McGonagall. ‘It’s high time your grandmother learned to be proud of the grandson she’s got, rather than the one she thinks she ought to have – particularly after what happened at the Ministry.’
When she charged into battle:
‘Get back!’ shouted Ron, and he, Harry and Hermione flattened themselves against a door as a herd of galloping desks thundered past, shepherded by a sprinting Professor McGonagall. She appeared not to notice them: her hair had come down and there was a gash on her cheek. As she turned the corner, they heard her scream: ‘CHARGE!’Harry Potter and the Deathly Hallows
When she brought statues to life
Possibly the most spine-tingling Professor McGonagall moment was when she raised the statues and suits of armour in defence of Hogwarts School of Witchcraft and Wizardry…
‘Hogwarts is threatened!’ shouted Professor McGonagall. ‘Man the boundaries, protect us, do your duty to our school!'