Smallest valuable Rails app - or a world clock in one line

I was trying to see what is the shortest rails app I can write that
still has value in it.

Well, I managed to get a world clock with a single line of code.
Actually 3 lines if you count the def get_time and end for the
function that calculates the time.

Check it out here:
http://devblog.famundo.com/articles/2006/11/09/a-world-time-server-in-one-line-of-rails

Guy.