A great movie for fans of the books.

Rating: 7/10 (15 February 2015)

Okay, first, I'd like to get this out of the way - this movie was made for women. WOMEN. W-O-M-E-N. Women are it's main target audience. Every guy you'll see watching this was probably dragged there by his wife/girlfriend/partner or he lost a bet. So any reviews made by men that mock the movie and laugh at the women who actually like it - don't get your anger about not being able to make it stand up on the keyboard. This movie was not meant for you, and you reviews are being backed up by other equally sexually frustrated men.
Now on to the movie itself. The plot is pretty much sticking to the books, with a few changes, here and there. The script is no different. Dornan (Christian Grey) says exactly the same things his character says in the books, while Johnson (Ana Steele) has a more feisty dialog than her literary equivalent. (Ana shouting "Red" at Chrstian at the last scene was a nice touch, and I was really impressed about how much Dornan was in-character and stopped on the spot.)
Though not a romantic-dramatic masterpiece, the movie has its emotional moments where you can really empathize with Ana (and sometimes even Christian). The sex scenes - and the characters sexuality - play a big role in setting the tone to each scene, and Dornan and Dakota spend an impressive amount of time inside each other's mouth. Personally, it was hard for me to watch the sex scenes without thinking about the fact that Dornan's wife, Amelia Warner, was heavily pregnant with their daughter during the shooting. (The sex scenes were shot last.)
The acting was excellent. People that complain about the 'dry' script, or how "awkward" Dornan and Johnson look, obviously never read the books. It's one-to-one, exactly how the fans wanted it. I'd really like to praise Dakota's acting - she was witty, and funny, and she changed the emotion in her voice according to the scene. It was a very pleasant surprise, because in the trailers she sounded really monotonous, which made me worry. Jamie's dialogs were exactly what you would expect - short and without much explanation behind them. He was very introvert, and portrayed Christian beautifully.
Regarding the sex scenes - though not as racy as I expected them to be, it has been a long time since the big screens of Hollywood saw so much breast and ass and moaning and groaning. Dornan was controlling (excuse the pun) all the way, like he knew what he was doing, and he expressed both pain and pleasure, at the same time.
All in all, the movie is a great treat to fans. E.L. James promised to stick to the book - and she was true to her word. Taylor-Johnson (the director) did an amazing job in bringing this best seller to life, focusing more on the romantic aspect of the story, while the sex, which got rougher as the plot went on, was used to indicate the inevitable climax (again, excuse the pun).
I recommend watching it with close friends or boyfriend/girlfriend, but only if you're really close, because most chances are you're going to behave in a way only the people closest to you are allowed to see.