The other Snakes on a Blog points out that pehaps opening night for Snakes on a Plane should be a little bit Rocky Horror-esque. Phog suggests that everybody buy dozens of rubber/plastic snakes and fling them into the air in the theater at the appropriate moment. It might get you tossed from the screening, but it would definitely make me laugh.
Get your orders in now:
7.5″-9″ snakes… $4.95 for 48 at Oriental Trading Company:
OTC Snakes14″ snakes… $7.20 for 48 at AMC Wholesale:
AMC Snakes
Just don’t hurt anyone… Snakes on a Plane is about Snakes on a Plane, not Blood in a Theater (although that might not be a terrible sequel now that I think of it).

I am gonna try this at one of my local theaters, but I wasn’t gonna use rubber snakes. If one of those hit somebody they might get pissed and bleed me out. Instead I am gonna use
http://www.candywarehouse.com/giantsnakes.html
If a grumpy person gets hit with a gummy snake they can do nothing but smile and enjoy the crowd would love it :) And its all about spreading love and not hate.