When I was in high school, a pep rally consisted of two or three girls waving pom-poms and trying unsuccessfully to get a small crowd to yell "Win team win." Times have changed.
Some serious planning, choreography and hundreds of hours of practice must have gone into this routine at Walden Grove High School, Sahuarita Arizona. Worth a few minutes of your time unless you are a complete grouch. And probably worth clicking the full-screen icon.
Via Boing Boing.