From what I gather, Snakes did garner a certain ironic cachet on the internet like C-62 says, and why not? The premise is hilarious, it's almost what, "camp"?
You know the ingredients: Sam Jackson, copious use of the word "motherfucker/ing", dumbass flight attendant bimbos, whiteys who can't relate to Sam's loudness, and CGI snakes. I think it's a case of dare to be stupid, something Hollywood has been shoving down our throats a bit much lately. It'll make it's money back, who knows, maybe it's good and will become the new "Die Hard" type franchise. I digress . . .

By the way, I found Talladega Nights to be huuuugely disappointing. I mean, I want my $10 back kind of disappointing. I'm a Ferrell fan and all that, a Sacha Baron Cohen fan too, but whoever directed the film needs an asskicking.