I really liked REC. What started out as looking like a generic horror film with well know movie tropes quickly surpassed my expectations. The found footage style of camera work is something many movies have done but few have done well. The biggest issue is "Why are they still filming?" In such a horrific situation why not ditch the camera and run? REC has a logical, in universe reason why the person holding the camera is filming everything they do. Which is really refreshing to see. Then there is the story itself, it starts as a typical zombie movie but offers a really interesting twist on the genre at the end which elevates the story beyond the typical "zombies eating brains". This is really evident if you watch the American remake called Quarantine. It completely changes the story at end but still includes same night vision climax. In REC this final scene was terrifying but it in Quarantine it's just confusing as it doesn't fit within the new context of the plot changes.