The new Web video from Matt Harding, accidental professional dancer, is up, and it is spectacular, a cry of life and brotherhood and joy. As Harding toured the world ... filming the third installment in his Where the Hell Is Matt?" video series, you might have thought that the trick would have played itself out. An ordinary guy doing a kind of running-in-place dance at 69 earthly locales with an ethereal song as soundtrack shouldn't be endlessly endearing and deeply inspiring. But this music-video-length wonder works in surprising ways, especially amid the predominantly crass environment of YouTube. Part of the charm of the video (also at Harding's own wherethehellismatt.com) is his new twist for it. At each stop on his latest set of travels, Harding invited locals to come dance with him. In Chicago, that meant more than 100 people bobbed up and down in front of The Bean sculpture. In Poria, Papua New Guinea, it was a handful of people in full tribal garb accompanying Harding. The collection of disparate peoples doing essentially the same pointless yet joyful thing is a reminder of what's universal in humankind. The teasing glimpse of so many gorgeous spots is a goad to renew your own passport and get moving. Part of the charm comes from the unadorned simplicity of Harding himself-he just looks damned happy to be wherever he is-and the delight that is his story. A video game designer disaffected by the industry's trend toward violence, he quit his job in early 2003 and began traveling. At the suggestion of a friend, he used the video function of a point-and-shoot digital camera and taped himself dancing at all his stops.