The Sorcerer's Stone (2001)
The Chamber of Secrets (2002)
The Goblet of Fire (2005)
The Half-Blood Prince (2009)
The Deathly Hallows (2010 and 2011)
When the first movie was released in 2001, Daniel Radcliffe (Harry) was 12, Rupert Grint (Ron) was 13, and Emma Watson (Hermione) was 11. Now, they are 21, 22, and 20, respectively.
I think it's amazing that they were able to keep the same characters through 10 years of movies-- not just Harry, Ron, and Hermione, but also the other "main" characters, like McGonagall, Snape, Neville, and Malfoy.
When I saw the first movie, I remember being amazed at how perfectly the characters were cast. My very favorite person cast in a roll was Evanna Lynch, who played Luna Lovegood. She is exactly what I pictured while I was reading. I also think that Fred and George were wonderfully cast. They were played by James and Oliver Phelps.
I guess I'd forgotten how much I really like these movies, and despite all the popular criticism, I think each and every one of them were very well done. I think it'd be extremely hard to fit all of the thousands of minute (but important) details that JK Rowling included in the books!
I can't wait until November, when part 1 of The Deathly Hallows comes out! I hope it lives up to expectation!