I love Harry Potter too! I love all the books, but my order would be Deathly Hallows, Socerer's Stone, Prisoner of Azkaban, Goblet of Fire, Order of the Phoenix, and then Half Blood Prince. Like I said, I love every single one, so the ones I put last I still love. For the movies, I would have to see them all close together to be able to tell you. I know that I love The Prisoner of Azkaban movie. My least favorite movie would have to be The Half Blood Prince. They didn't even follow the story line! They cut important things, and added dumb, made up stuff!

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I love Harry Potter, too! Like most of us here, I've read all the books and seen all the films as well. :) Like Ivy, I loved every book, but my order from favorite to least favorite would probably be something like OotP, DH, HBP, GoF, PoA, SS/PS, CoA. I feel like JKR's writing got better as she went along. OotP is my favorite, though, because it introduced Luna and Umbridge and showed Bellatrix for the first time, and those three are probably my favorite characters in the series.

My favorite movie is probably SS, because it followed the book the most. I'm not really sure what order I'd place them all in as a whole, because it's been a while since I've seen some of them.

I love the Harry Potter series! I've read all the books, and seen all the movies as well! My favorite will probably always be the first, both in book and movie. My least favorite book was probably Order of the Pheonix, though I agree with Ivy. They took WAY to much out of Half Blood Prince in the movie, and added in just a bunch of meaningless junk. 

After Sorcer's Stone, will probably Deathly Hallows, Goblet of Fire, Prisoner of Azkaban, Chamber of Secrets, Half Blood Prince. 

*spoiler*

Now though, to me, Deathly Hallows movie Part 2 was good, but messed up severely in key scenes. Like Neville's big scene, where he kills Nagini. It was AWESOME in the book, but in the movie? He gets knocked out first, then wakes up with a doofusy look on his face! Not much of a heroic scene, if you ask me. That was my biggest annoyance with it.

Then the ending!!! THEY DIDN'T FIX HARRY'S WAND!!!! What's up with that?! They just brake the Elder Wand, cast away, and then what?! POINTLESS!

Now, Mrs. Weasly's scene was good, I was just a little disappointed in it when she got thrown off of balance first, which, I guess was needed, but to me, they didn't make it very climatic.

Though, I've got to admit, I was annoyed with the book when they didn't say what happened to Luna ten years later. So I admittedly liked (I know, coming from me, this is shocking), the whole thing between Neville and Luna, since it was funny and subtle.

*end of spoiler* 

So my end of rant. My likes and dislikes of the series. 

I love all the books; can't say I like one anymore than another.

But the movies? Oh brother:

I did not see Sorcerer's Stone.

I saw Chamber of Secrets, but I did think that Tom Riddle could be a little more...I don't know, accurate. And Rupert Grint's acting nearly put me in tears, it was so wooden.

Prisoner of Azkaban was the first one I saw, and I thought it was good compared to the second one. Somehow I imagined Sirius a little differently, but Lupin was awesome, and so was Buckbeak.

The Goblet of Fire seemed to really get into the meat of the business, and Rob Pattinson looked so good to make up for his slight lack of character. The ball was fantastically done, and the acting finally seemed to get up to par.

Order of the Phoenix was my favorite, because it played down the irratating parts (Harry's infatuation with Cho, Umbridge's evilness, Harry's anger at everyone and everything) and managed to keep the rest pretty close to the story. Sirius finally seemed to become Harry's godfather, and the battle at the end was pretty cool, even though Harry and Cho did kiss. It wasn't as bad as I thought.

Half-blood Prince was TERRIBLE because they did add waaaaay too much, Tom Riddle became even less true to his character (why couldn't they pick actors that, A, looked more handsome--J.K. Rowling points this out so much, you can't ignore it--and B, seemed properly evil? So annoying), and Malfoy seemed to be quaking in his shoes a little too much. Snape at the end was all right, but then, everything Snape does seems properly true to the book.

Deathly Hallows part 1 wasn't bad but I missed Hogwarts a lot, and it made it seem like Harry liked Hermione with those extra scenes they put in.

Deathly Hallows part 2 was pretty fantastic, and I totally bawled like a fool when Harry saw Snape in the Pensieve. Only two things I was slightly disappointed by: too much battling between Voldemort and Harry at the end, which got tiresome, and the actors they picked for James, Severus and Lily when they were young. The kids they picked in OotP seemed better, little as they showed of them...

And there are my thoughts regarding the movies.