Dance Dance Revolution Extreme 2 (PS2)
$59.99 at Best Buy and other stores
I was challenged to a DDR face off.
I figured i should brush up on my DDR skills.
So I busted out my Polyester Adidas Track Suit. Sweat Band. Wrist Bands and Leg Warmers. Rockin the Reeboks too of course.
The game is addictive.
Not the actual game I have, but here's an arcade version.

Long live DDR.