Any one participate in "Earth Hour"?

[Nano]

like the title says, obviously your not shutting down your tanks for the hour or hours, but does anyone participate by reading a book for an hour versus watching tv, or turning off that light in the basement that you left on earlier? I'm not a hippie, just "gauging the interest" in it

The last 2 years my wife and I turn off the lights and go outside for a walk for an hour, with her being to pregnant to walk to far, we might read a book together tonight.

What will you do?
(and lets keep it positive )