Further Research - Found Footage Genre

Found footage is a genre of filmmaking, especially horror, in which all or a substantial part of a film is presented as discovered film or video recordings, often left behind by missing or dead protagonists.The events onscreen are seen through the camera of one or more of the characters involved, who often speaks offscreen. Filming may be done by the actors themselves as they recite their lines, and shaky camerawork is often employed for realism. While the genre dates back at least as far as 1980's Cannibal Holocaust, it was popularised after the release of such films asThe Blair Witch Project (1999), Paranormal Activity (2007) and Cloverfield (2008).

Examples of Found Footage films (horror/sci-fi horror films highlighted)

Cannibal Holocaust (1980)
Månguden (1988)
84C MoPic (1988)
Man Bites Dog (1992)
Alien Abduction: Incident in Lake County (1998)
The Last Broadcast (1998)
909 Experiment (1999)
The Blair Witch Project (1999)
The St. Francisville Experiment (2000)
Gang Tapes (2001)
The Collingswood Story (2002)
August Underground's Mordum (2003)
The Last Horror Movie (2003)
Zero Day (2003)
September Tapes (2004)
The Curse (Noroi) (2005)
The Zombie Diaries (2006)
Alone with Her (2007)
Diary of the Dead (2007)
Exhibit A (2007)
Head Case (2007)
The Poughkeepsie Tapes (2007)
Paranormal Activity (2007)
REC (2007)
Redacted (2007)
Welcome to the Jungle (2007)
Cloverfield (2008)
Home Movie (2008)
June 9 (2008)
Lake Mungo (2008)
Monster (2008)
Quarantine (2008)
Evil Things (2009)
Occult (2009)
Paranormal Entity (2009)
REC 2 (2009)
The Ritual (2009)
Trash Humpers (2009)
8213: Gacy House (2010)
Abnormal Activity (2010)
Atrocious (2010)
Eyes in the Dark (2010)
Love Sex aur Dhokha (2010)
The Last Exorcism (2010)
Meadowoods (2010)
Paranormal Activity 2 (2010)
Paranormal Activity 2: Tokyo Night (2010)
Paranormal Effect (2010)
Re-Cut (2010)
Shirome (2010)
The Troll Hunter (2010)
Unaware (2010)
Anneliese: The Exorcist Tapes (2011)
Apollo 18 (2011)
Area 51 (2011)
Delivery (2011)
Grave Encounters (2011)
Hollow (2011)
Megan is Missing (2011)
Paranoid Activity 2 (2011)
Paranormal Activity 3 (2011)
Ragini MMS (2011)
REC Genesis (2011)
Stingy Jack (2011)
The Tapes (2011)
The Tunnel (2011)
Untitled (2011)
World of the Dead: The Zombie Diaries (2011)
The Amityville Horror: The Lost Tapes (2012)
Chronicle (2012)
Evidence (2012)
Haunted Poland (2012)
REC Apocalypse (2012)

As you can see nearly all these found footage films are horrors.

source:http://en.wikipedia.org/wiki/Found_footage_(genre)