[crazygringo]

Would be very cool to see this for NYC. Obviously, there's no "center" like Boston has, but if you just considered the center to be the square of 'midtown' from 14th to 57th st, and 8th ave to Lexington, and only drew the lines emanating from outside that, it would work the same.

And have a separate version where everything emanates from the Financial District.

Would be AWESOME for comparing commute times when looking at job/apartment locations. You could even add half the interval between trains, to make it even more realistic for planning.

[potatolicious]

This would be very cool as an interactive thing where you can select your own center. Hell, it'd be great for apartment hunters who can just select wherever their work is and go from there.

[natrius]

Mapnificent might be what you're looking for: http://www.mapnificent.net/

[crazygringo]

Wow! What a totally crazy and awesome tool.

The "bubble map" you get is quite clever.

Would be even more interesting if you could overlay different commute times, e.g. in 5-minute intervals, and produce something topographic-map-style.

[michaeltoth]

It's a bit slow and prone to crashes, but mapnificent is a decent tool for this: http://www.mapnificent.net/