I do this.

I have all of my entertainment console [TV, xbox, radio, cable modem, networking switch] apart from the DVR box plugged into a power strip that I've been turning off at night and while I'm at work. My electric bill is the same this month as it was the last two months. =/

I mostly do this. There are some electronics that I don't even think of until I notice that they are still plugged in lol

I always do this. My 4 flatmates don't, sadly..

I've been doing this for a few months now. I have noticed a change in my electric bill.

this is one of those things that's so easily forgotten. i feel like everyone reminds us that this is something super easy to do, but when you have everything plugged into a power strip you assume that you're doing something 'ok' when in reality you're really not.

My apartment calculates electric oddly. They take the electric bill for the entire building, subtract 15% for the common areas, then divide the rest, based 50% on the number of occupants for the apartment and 50% on the size of the apartment. So, while I try not to be wasteful with electricity, little things like this wouldn't make much of a difference for me unless everyone in my building did them.

There's a sweet device called Kill-a-Watt. It measures how much watts/hr a device is using. I switch off all the strips and set the water heater to "vacation" mode while I'm away. Even though my electric bill only went from $45 to $42. Most of the fees in my bill are things like infrastructure costs, nuke disposal fees, and meter fees. The city of I live is upgrading all the meters to be remote transmitters so a human doesn't have to physically walk onto each and every property to read the meter. Because of this added efficiency, may be we'll receive better quality of electrical distributions (not sure how to make it better), cheaper energy (yeah right), or upgraded infrastructure (phase-out of above-ground wooden transmission lines).

This is something I'm seriously considering.