Not since “Snakes on a Plane” or “Alien vs. Predator” has that question seemed quite so urgent. The trailer’s a cult hit online, and no wonder. There’s no middle ground here, people: This is either a masterpiece of movie-monster cheese or a concept so dreadful that the negative should be seized and incinerated. The fact that the stars are Lorenzo Lamas and Debbie “Shake Your Love” Gibson points towards the latter, but how bad can a movie be that features a shark attacking an airplane? Verdict: It’s the “Citizen Kane” of giant octopus movies.