Can satellites watch you change and stuff?

Well, those people telling you that either watch too many science fiction shows, or are pulling your leg.

Satellites can't do that.
And think about it a moment:
1. Why would anyone want to use multi-billion dollar technology to spy on ordinary people?
2. Why would anyone want to use multi-billion dollar technology to spy on one person (you) out of 7 billion?

I find it amazing that people think they are so important that other countries want to watch them.
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Well, ..., if you're out and about you can be watched. Additionally, there is a high degree of real-time infrared capability. However in-terms of watching you change ... you have more worries from your Xbox Connect, Smart TV, phone camera, or Laptop capturing you in a compromising position than you do from satellite technology.
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Satellites have Cameras and can see what is going on OUTSIDE.
Satellites have Radio Receivers that can listen in on all radio transmissions including cell phones.

They do NOT have X-Ray Vision.
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yes and no.

YES, SOME satellites (NOT all of them) CAN see you on earth while they are in space. But remember, MOST satellites are for RADIO communication, like cell phones and GPS systems and TV broadcasts, AND THEY HAVE NO CAMERAS, so they can't see you at all!

And, of those that DO have these very very expensive cameras, THOSE are being used by the military to see if Iraq is going to launch,missiles at Israel, or if North Korea is going to attack South Korea. These satellites are FAR TOO BUSY doing important stuff to be watching YOU.

YES, a very very few satellites COULD see you, but NO none of them are looking at YOU.