I saw it last night, and I think I'm undecided about this film.
For the first time ever on a Smith film I rarely laughed.
I think it suffers the same fate as John Waters' film - 'A Filthy Shame'. It seems that sex comedies are so much harder to pull off (pardon the pun) these days.
The first half (talk about porn) was funnier than the second half (the porn itself). But as other posters have mentioned, without the usually Smith cultural/social banter it all kinda felt a bit too shallow.
It'll be interesting to see what Smith does with Red State. Though I kinda get the feeling it won't be long before we see the return of Jay and Silent Bob.