Cirque du Soleil, one of the most renowned circus’, includes performances that make use of formations. In my opinion, this is a way of conveying information in a very visual way. In addition to being an art form, this is also making use of people to relay information to the audience in that the formations may tell a story. These formations also often look to nature for inspiration. This is a circus that I never got a chance to see, but would like to!

Source: https://www.bizbash.com/cirque-du-soleils-whimsical-kurios-cabinet-curiosities-playing-torontos-port/gallery/149725#.Wf_pKLpFyhc