I know this comm is long dead(ish), but to any of you who still might check it, I just wanted to say this:
SNAKES ON A PLANE is a perfect example of a high concept, well-executed screenplay. Yes, it's hyped to the max. Yes, it's Hollywood to the core. Yes, it's about snakes on a mf'n plane. But it delivers exactly what it promises and follows three act structure to a T.
Plus, it's scary fun.