What's Behind ‘Cloverfield' Illness? Wave of Nausea Hits Moviegoers By Michael W. Smith WebMD Medical News Reviewed By Louise Chang, MD Latest MedicineNet News Jan. 22, 2008 -- Scan the news and blogs and not only do you see that Cloverfield had a record-breaking opening weekend, but there was an unforeseen side effect: nausea. And it didn't come from the popcorn, or the writing -- but the camerawork. In Cloverfield, a giant monster attacks Manhattan. The problem -- at least for those prone to motion sickness -- is that it's all filmed through a very jerky handheld camera. "I saw...