mockumentary
a film that has the look and feel of a television documentary, but with the irreverent humor and slapstick of a comedy, designed to "mock" the documentary or subject it features.
Example:
"Drop Dead Gorgeous," which ridicules a local Minnesota beauty pageant, is the illegitimate child of "This Is Spinal Tap" -- a weak link in the people-are-stupid tradition. In that it portrays a group of film students making a documentary about a local witch legend, "The Blair Witch Project" is not unlike those "the making of" movie documentaries with which subscribers to HBO and Showtime are all too familiar.
"Drop Dead Gorgeous," which ridicules a local Minnesota beauty pageant, is the illegitimate child of "This Is Spinal Tap" -- a weak link in the people-are-stupid tradition. In that it portrays a group of film students making a documentary about a local witch legend, "The Blair Witch Project" is not unlike those "the making of" movie documentaries with which subscribers to HBO and Showtime are all too familiar.