Octopus

You have to get through 35 minutes of the movie Octopus before you get your first look at the titular cephalopod. What’s worse is that it takes that long before the octopus even becomes a factor in the movie at all. While it’s not uncommon for a low budget creature feature to hide its monster for as long as possible, at the very least the filmmakers normally imply that their monster is an active threat prior to the big reveal. It might take some time before we get a clear view of the shark in Jaws, but at least it kills someone in the first five minutes of the movie. You shouldn't have to sit through a third of a movie called Octopus before you ever see a freakin' octopus.

Rating: Tentacle through the head%

(Image from mrqe.com)