Super 8 / Cloverfield (DVD)

Super 8 (2011)
In the summer of 1979, a group of friends in a small Ohio town witness a catastrophic train crash while making a super 8 movie and soon suspect that it was not an accident. Shortly after, unusual disappearances and inexplicable events begin to take place in town, and the local Deputy tries to uncover the truth – something more terrifying than any of them could have imagined. Something unimaginable escaped during the crash. And everyone's about to discover that the only thing more mysterious than what it is, is what it wants.

Cloverfield (2008)
When five young friends get together to hold a going-away party for one of their number, their celebrations are violently curtailed by a series of huge tremors felt throughout the city. As panic begins to spread, it soon becomes apparent that New York is under attack from some huge malevolent force intent on destroying the city. Told from the perspective of a hand-held camera, the film is a document of their attempt to survive the most surreal, horrifying event of their lives.