I can't help but think of the extremely funny mockumentary 'Best In Show', making fun of American dog contests/ shows.
It's created by the creative brains of the people behind 'This is Spinal Tap' and if you haven't already seen it , I highly recommend this hilarious film from the year 2000.
I never saw This is Spinal Tap, but I heard it was decent! I should check some of the mockumentaries out - though I don't watch that much TV and I wonder if it is worth my time :)
They are, in my opinion, worth your time but we all have a differen sense of humor, of course ;^)
Are they terrible movies with a lot of black vomedy and cynicism?
That is my humour. :)
I suggest seeking out the trailers ;^)