On calibration and color perception

Some very interesting and informational sites about flat panel properties, environment lighting conditions and color perception.

So you think you have optimally calibrated your set? Now watch this!
Lotto Lab : Illusions of light
Specially this one is nice:
visual demo
By no means I mean to say calibration is useless ... but certainly this puts it in another perspective ... our brain fools us!

The importance of some "bias light" behind your screen (hm, seems like Philips did well with their Ambilight). Also interseting info on the differences between a glossy and a matte screen:
http://www.cinemaquestinc.com/ive.htm

A lot of useful info in the pdf file at the bottom:
http://www.fpdl.nist.gov/tips.html

Plus thousands of test patterns and -pictures in their "patterns" link:
ftp://ftp.fpdl.nist.gov/pub/patterns/

Credits to the original author:
http://www.avsforum.com/avs-vb/showthread.php?t=849430