I stopped watching this POS as soon as the snakes started "taking over" the plane.
At first I thought maybe it should get a "one" for the comic relief. But then I realized I could just watch the three stooges for free and laugh more!
Whatever respect I might have had for Samuel Jackson has been irreversibly destroyed. And Hollywood demonstrates once again how removed from reality they really are. When I was a kid we used to catch snakes for fun. The only thing snakes would do is huddle at the bottom of the cargo bay. And no amount of Hollywood cartoon snakes can change that.
This movie isn't worth a trip to Blockbuster. Be warned: if you pay for it, the only "victim" is your dumb ass.
If you want to be really scared, I suggest the Descent. If you want humor, go to your local stand up comedy club. Their worst performer will be a million times better than this trash.