As a technical consultant my work life is interrupt driven.  Long term projects are constantly put on pause to deal with urgent issues that require immediate attention.

Today was different:  I forgot to take my cellphone to work.  Without my cellphone, I was not interrupted by text messages, twitter updates, brightkite posts, automated SMS alerts and phone calls.  A direct result of removing these interrupts, a highly productive morning.  This unintentional experiment has reinforced the value of being less interrupt driven.