The Host fits a long story in two hours. To do it, most of the book's character development is dropped. If you've read it, you can fill that gap, but may have problems with some of the other changes.
AVP mixes two great franchises and, oddly takes maybe a slight step down, but still ends up as a fairly enjoyable outing.
Alien is a classic of both monster movies and cinema in general. Since 1979, any serious attempt at making a monster movie must be aware of what went into this Ridley Scott masterpiece.
The Horatio Hornblower movie series is a wonderful adaptation of C.S. Forrester's novels. Here I make a character study to focus on how the film makers brought the character of Archie Kennedy to life.
A simple comparison of two versions of the same story. Everyone has a different idea and approach, but it's up to you to determine which is "better".