Ultra Long Range Laser Illuminated IR X-Ray/Night Vision Camera
 

Yes, we can speak of kilometers away (look at videos!):

http://www.kaya-optics.com/products/...ra_systems.asp

Or this, not so remote, but cheap ($399) Infra Red "X-Ray" Vision capable camera (look at pictures taken of same object: one in normal color mode and other in X-Ray mode:

http://www.kaya-optics.com/products/..._KHD_5000X.asp

More experiments using Infra Red cameras here:

http://www.kaya-optics.com/products/experiments.shtml