this wasn't in the plan |but life is still pretty good

Wednesday's Oprah included ways to save money and featured a woman who has started unplugging all electronic devices when they are not in use.  According to her, doing this cut $200 off of her electricity bill.

I'm not completely skeptical, I know that even when not in use these devices use electricity, but $200 seems like an awful lot.  Unless maybe this woman has several plasma TVs or decided to unplug her refrigerator for awhile.

Does anyone have any experience with this?  Have you noticed a huge decrease in your electricity bill?  What are some ways you save on electricity?