I've been collecting pictures of knits (and crocheted pieces) in the newest Harry Potter movie. I thought perhaps these photos would be helpful to others, so I'm listing them here. If you have links to add or find knits I've missed, please leave a comment and I will add them! I've skipped a couple of the super tiny stitches, plain knit cardigans and such. They're obviously machine knit and I don't feel there's enough really spectacular or unique about them to include them in the list.
Hermione's Hat & Fair Isle Scarf (my attempts at patterns: hat and scarf): 1, 2, 3, 4,
Ron's Brown Striped Hat and Fair Isle Sweater: 1,
Quidditch Sweaters: 1, 2, 3,
Luna's Furry Sweater: 1,
Neville's Fair Isle Vest & Hermione's Fair Isle Cardigan: 1,
Hermione's Gray Tailored Cardigan: 1,
Ron's Striped Cardigan: 1, (There's got to be a better pic out there than this!)
I'm also fairly certain that Lupin, Tonks, and Mr. and Mrs. Weasley were wearing some nice knits as well, but I couldn't find any decent screen shots. Perhaps when the DVD comes out, it will be easier to grab those images.