The low-budget monster movie Cloverfield had a very successfull opening last weekend. Sony says that the makers of Cloverfield used the Sony F23 high-definition camera for the footage the character Hud shoots during the monster attack on New York.

"We needed the look of the movie to be very immediate, like ‘found footage,’ so a YouTube aesthetic was the look we were trying to achieve, Nick Theodorakis, digital imaging supervisor for Cloverfield, said. "The F23 provided latitude without sacrificing any color imagery, allowing us to stay as strict to reality as possible while generating that warm look of New York City’s streets with its sodium vapor lights."
To mimic a Handycam camcorder’s look and feel with the movement and image quality of a studio camera and to satisfy the tremendous visual effects demands, Theodorakis said he placed the F23 camera’s deck inside a backpack to make the shots seem more mobile.
Of course Cloverfield reminds us of the "The Blair Witch Project", but in Cloverfield something actually does happen.
Via this Sony press-release.