Razor sharp and funny as hell, Incident at Loch Ness is the harpoon hurled into the hot-air balloon of “reality” entertainment.

In its final scenes, when truth and superstition collide, the film becomes more preposterous than anything Penn may have contrived earlier.

Turns out to be surprisingly layered.

Watching the movie is an entertaining exercise in forensic viewing, and the insidious thing is, even if it is a con, who is the conner and who is the connee?

A giddy mockumentary.

In addition to being a funny movie about the movie business, it's a cheeky, ingenious motion picture puzzle.

Once the cat is out of the bag, "Incident" becomes simultaneously entertaining and disappointing.

Can be taken as a parable about cinema art vs. commerce. If that's too much to think about, just enjoy the off-beat humor.

An amusing mock documentary that spends considerable energy artfully trying to make you believe it's real as real can be. The movie is transparently a fake, but its counterfeit nature is the heart of its charm.

Constructed Chinese-box style as a series of films within films, with a faked one about the Loch Ness monster at the center, "Incident" will have maximum impact for the first auds to catch it before its sly central joke gets out.

Something of a gigantic goof, perpetrated by Penn and Herzog -- and the goofees included much of the entertainment media, people in the film business, the Scottish authorities and (I think) even some of the film's cast.

It's actually a clever commentary on documentary filmmaking, an pretty good monster movie to boot.

Incident at Loch Ness manages to cross "Project Greenlight" with "The Blair Witch Project" in a way that makes one pine for the originals.

Incident at Loch Ness, unfortunately, is a riddle wrapped in a hoax stuffed inside a crock.