To expand on this:

Ron also becomes an Auror after joining George.

Hermione moves out of the Magical Creatures department and into the Department of Magical Law enforcement.

After a few years as a top player for the Harpies, Ginny retires and works as becomes the senior Quidditch correspondent at the Daily Prophet.

I only mention George's ear because in the book, much is made over the fact that Snape used sectumsempra on George, a spell that Snape created and only Snape knows how to reverse. As for Luna/Neville, as I said, I'm not overly bothered, but I annoys me just a tad that something was added in just for a group of fans who wanted it. Ah well, I probably shouldn't complain. I had half expected them to cater to the Draco Malfoy fangirls and have him stay and fight for Hogwarts. Dodged that bullet.

To those who haven't read the books, were you at all confused when Harry mentioned Lupin's son? They had barely mentioned that Tonks was even pregnant by that point, let alone given birth to a son.

The death of whom I presume was Ron's brother, because it showed him for like ten seconds and I had no idea who it was.

Harry mentioned it after he'd used the Resurrection Stone. Said something to the effect of, "I didn't want any of you to die for me. And, you, Remus. Your son," This made little to no sense the in context of the films. In the books, the birth of Teddy (Lupin and Tonks' son) is a much bigger plot point. And let me express my horror that you knew not Fred Weasley! He was one of the twins, if you'll recall, as well as one of my favorite characters. His death kind of tore me up. But, again, I suppose I can understand your confusion....in the context of the films.....but still, kind of upsetting to me.