Paranormal Activity is a 2007 American independent found footage supernatural horror film written, co-produced, photographed, edited, and directed by Oren Peli. It is the first entry into the Paranormal Activity film series. The film centers on a young couple, Katie and Micah, who are haunted by a supernatural presence in their home. It is presented in the style of "found footage", from cameras set up by the couple in an attempt to document what is haunting them. Wikipedia
Micah: Hey, hey hey hey hey! Let's talk about this first. It's just, I'm in control, I'm making progress. Katie: No, you haven't been having any progress, and you're *not* in control. *It* is in control, and if you think you're in control, then you're being an idiot! Not a single thing you've done has helped, and I'm sorry, I don't mean to burst your bubble, but the camera hasn't helped and the stupid footprints haven't helped; do you think that thing would have left footprints if it didn't want to? No! It did it because it wanted to! It wanted you to find my photo, it can be anywhere, it hears what we're saying right now. Micah: Hey! How the fuck do you know? Katie: You are absolutely powerless! Micah: That's, that's not at all true, and you know it. Katie: Well, get over it.