Here’s a cool music video of the song Upside Down & Inside Out from the band OK Go. It was filmed on a S7 Airlines aircraft flying a series of parabolic trajectories, which provide periods of 20-25 seconds of weightlessness.
As seen in this diagram, the “zero-g” periods are when the plane coasts over the top of the ballistic trajectory. You pay for this when the plane pulls up and your weight nearly doubles.
Usually people lay down flat during those heavy times. I had assumed the video makers had done an excellent job of weaving a series of segments seamlessly together to make it look like a continuous performance. However, articles about the video say it was actually shot in one continuous take. The band members and stewardess actors steadfastly stood or sat upright and tolerated the extra weight without changing their expressions. It took a lot of planning and practice to make this video.
Articles about the video: