Pro gamers videos
If you are looking for serious stuff, the following is for you, pro gamers playing Score or Style. These are separate kinds of DDR contests. Score is basically about hammering the mat as fast as possible to pass ultra fast song which really look impossible to the regular guy. Style is usually played on easier songs, and is more an "artistic" rating.
A-team member (well known corean team) executing Dam Dariram in Style.
A team in double action on Naoki Brilliant 2U: Style again, beautiful.
Eternal Team, two players coop on Let's Get Down, Style.
Cool Style play during a french tournament.
Example of a Score performance.