"Unplugging" MacBook Pro?

Excuse this probably-dumb question, I'm new both to the world of Mac and to the world of laptops (I've always had desktops in the past):
Background: I use my new MacBook Pro on my desk at home 90% of the time, as though it were a desktop. I have a wireless keyboard and mouse, an external display, a USB hub with many devices connected (including an external hard drive used as my Time Machine, and a printer) connected at all times, an ethernet cable, and I leave it connected to its power cord.
From time to time, I would like to move the MacBook to another room, just for a short while. The first time, I closed the screen (putting it to sleep) and simply unplugged everything. This was the day I had my one and only problem with my MacBook -- after re-connecting it, the battery wouldn't recharge, I had to bring it to a Genius Bar (where I learned about resetting the battery). I don't know whether one thing had something to do with the other, or whether it was a coincidence.
So here's my question: Is there a way to "unplug' all these peripherals from my MacBook Pro without fully shutting it down first? Or is it generally a bad idea to do this?
Thanks.

Should I eject the Time Machine backup drive first (connected to USB hub)?
Yes, definitely. You should always eject (unmount) mounted drives before disconnecting them. That way you can be sure that they are not reading/writing data when the plug is pulled. If you pull the plug when they are in the process of doing something, data corruption can result. So it is definitely a good idea to eject the drive before unplugging!
--Travis

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I know this question is answered, but I didn't want to create another thread to discuss the same topic.
I think this issue is rooted in the Cinema Display being attached to port 3 of it's own internal hub. This is to allow the display dimming, the power button that controls the sleep/wake of the laptop, etc. I just got my 30" cinema display a week or two ago, and before that was using an HP IPS LCD panel (24") that also had an integrated USB hub. I have the same devices attached too --USB hard drive for time machine, and keyboard (mighty mouse plugged in to keyboard). When unplugging the cable to the HP monitor's hub, the macbook would not wake up. Just with the Apple display.
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I have a Macbook Pro 17" (Mid-2009) that has had an issue with the whole computer shutting down at random, but only when unplugged from the MagSafe power adapter. Upon scouring all the forums and discussions I could, I haven't found anyone with the same exact circumstances as myself, hence this post. Let me explain.
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Nothing that anyone says here can repair damaged or faulty hardware. Use this page to locate the nearest Apple Authorized Service Provider — there are several in Vermont:
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Leo666 wrote:
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"Unplugging" MacBook Pro?

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