I went with a group of fellow birders, and had intentionally avoided seeing any trailers so I could experience the shock and terror of the birdemic in its full glory at the theater. It definitely helped to have a few drinks in me, and go with a group. Of course the RiffTrax commentary made it that much more hilarious (even the boring first half of the movie.) When the birds eventually appeared (finally!) I laughed more than I'd ever laughed at any movie before! I was really glad I hadn't seen any trailers beforehand, so I could really savor that moment. Not sure it would have been as funny just watching it on my own, but in the right context it's definitely worth seeing.