One Hour of Girl Power is the 1997 VHS Release based around the time of The Spice Girls debut album Spice it shows various performances and all the videos as well as behind the scenes of the music videos. On iTunes, a five minute abridged version of this was released as a bonus track with the Greatest Hits album.
One Hour of Girl Power shows the Spice Girls arriving at a hotel for a promotional tour in the America, . The Girls are shown having a laugh, jumping in the hotel pool. Included on the video are the promotional video clips for their debut single, Wannabe, Say You'll Be There, Mama and Who Do You Think You Are. The videos are interspersed Behind the scenes footage of the making of the videos, and a running commentary by the band. The video for Who Do You Think You Are appears in an alternate version, showing behind the scenes footage of the filming with British Celebrities, including Dawn French, Jennifer Saunders and Lulu, joining the Spice Girls in an appeal for the 1997 Comic Relief appeal. Footage of the girls in America, Honk Kong and the UK round out the documentary portion of the video. One Hour of Girl Power concludes with the classic 1997 BRIT Awards.
The video was very successful at the time of the release and made it to the top spot on the U.K. Video Chart. It was also successful in many other countries such as Japan and America.