How to do Scratching (aka mesmerizing hipster cult dancing)

What is this strangely entrancing hipster cult modern dance troupe? Sit back, listen to Ratatat and enjoy this freestyle modern dance Scratching Tutorial. Scratching is a dance for the studio or the street. Scratch in your socks, scratch in your sneaks, scratch at home, scratch all week. In Scratching, at least one foot must never leave the floor. If one foot leaves the floor, it's called jumping, not scratching! Basic moves include:
Tap Slide
Swing Out
Billy the Kid
Ballet Jerry
Inverted Ballet Jerry
X-Box

Be sure to click on chapter two to see the second part of this Scratching tutorial. In Chapter 2, your feet leave the ground, but only one at a time. More moves include:
Backstreet
The Broadway
The Clock
Broadway Variation
Santa Claus
The Charlie Chaplin
Derepage

Play some Ratatat and start scratching.. looks fun.