There's plenty of photos of the panty wearing subway riders (click link for photos) of course.
No-pants riders have previously taken over NYC subways and Chicago subways and Improv Everywhere has a list of global no-pants rides planned for 2011.
The female to male ratio seemed a bit more even in the New York and Chicago versions compared to the panty-focused (read: non-boxers) Taiwan event; we're wondering what the ratio will be in those cities listed by Improv Everywhere.
Check out the video of Taiwan's no-pants riders. Maybe turn the sound off as it comes with music straight out of a porno.