Feel free to move about the cabin -- and hula. Twenty performers from San Francisco's Na Lei Hulu I Ka Wekiu hula troupe stepped from their seats and started dancing on a flight from San Francisco to Honolulu earlier this month.
A video released by Hawaiian Airlines, above, shows the troupe singing "Ke Aloha" as well as "I Left My Heart in San Francisco" as music flows from the plane's speakers.
Flash mobs often use airports as their stage, but there's something fun about the surprise factor at 38,000 feet in the air (unless you're trying to sleep or work).
Who knows how many flash mobs surprise passengers on planes?
Here's another fun one of 15 people in white suits who broke into an a cappella collage of pop music aboard a flight from Rome to Milan in April. And check out the woman in front of them who's trying to sleep.