Retailer H&M got considerable bang for its buck with this video—in fact, there was probably no buck involved at all. Yet the clip, shot in San Francisco's Union Square, has gotten more than 28,000 views in the space of about two days. Apparently, few can resist the charms of 55 break-dancing youngsters clad in the latest Euro fast-fashion clothes. Though some bloggers have moaned that flash mobs are oh so 2008, this San Francisco stunt, engineered by Mr. Youth, at least has the virtue of showing off some new product. And at least they're not singing the "I'm a Pepper" song.
—Posted by Todd Wasserman