The Marauders were definitely McGonagall's favorite students, especially James. Dude may have been a bit arrogant, but he was brilliant at the two things McGonagall loved most - Quidditch and Transfiguration.
Mrs Weasley could be so, so cruel. To Sirius and Hermione and I'm not sure who else but it's there and it's nauseating<<<i agree, there was a time when I wanted to jump in the book and knock molly-wobbles' face.
In Lily's letter to Sirius, she mentions how Harry nearly killed the cat with the toy broom that Sirius got him. Well, what if that's the reason that Crookshanks has a squashed head and a flat face? <<< This makes perfect sense!