Worst Movie of All Time? Your Nominations Please

It's official. According to the Academy, best movie of 2009 is The Hurt Locker. According to the Razzies, worst movie of the year is Transformers 2: Revenge of the Fallen. And now Australian writer Michael Adams, who has ventured bravely in the trenches, back alleys and grindhouses of movie history, gives us Showgirls, Teen Wolves and Astro Zombies: A Film Critic's Year Long Quest to Find the Worst Movie Ever Made. (Hat tip: Meredith Blake of The New Yorker).

Adams' book exemplifies that mystifying paradox: Some of the best writing about film is devoted to the worst movies. Even if you disagree with him (as I do), one must celebrate his aim to distinguish between the three types of bad films,  "what's-so-bad-it's-good, what's-so-bad-it's-bad and what's-so-bad-it's-the-worst."

Showgirls etc gives us the gradations of bad/good, bad/bad and bad/worst, movie-wise.

My pick for all-time worst film would be Cannibal Holocaust, which does not even make the bottom all-time 100 on the Internet Movie Database list of the worst flicks ever. (I've seen more than half the films on the IMDB list, but I've never before heard of The Tony Blair Witch Project.)

Following the Adams guidelines, your nomination for best so bad it's good film? (For me, Valley of the Dolls). For so bad it's bad? (Rawhead Rex.) So bad it's the worst? ( Cannibal Holocaust. ) Tell me why.