In part 2 of the IELTS Speaking test, you might have to describe your favourite film ('movie' is American English). My advice is to look for your film on amazon.com. You will find reviews of almost any film, from The Godfather to Titanic.
The only problem is that the reviews are often quite difficult or too detailed. I recommend stealing a few ideas or a few bits of good vocabulary.
For example, here is some good vocabulary from a review of The Godfather:
- one of the greatest films ever made
- a masterpiece
- a brilliant story
- the actors' performances are outstanding
- it's compelling to watch
Make sure you can summarise the film's plot (the story). Try to remember where and when you first saw the film. Explain how it made you feel and why you like it.