After looking at everyone's settings, I just had some quick comments and questions.
The purpose of video calibration is to coax your television into reproducing an image as close as possible to the way the original source material was intended to be shown.
With that in mind, anyone serious about seeing the true quality of the original signal should never have Noise Reduction, DRC, Black Corrector, Advanced C.E., Gamma, Clear White, Detail Enhancer, and Edge Enhancer set to anything but OFF for any 720 or 1080 source.
Some of these settings can sometimes help a bad signal (SD cable/sat, antenna, etc.) appear better, and others are just clumsy shortcuts to a result that could better be achieved by properly adjusting other settings.
You may think they improve the signal, but doing things like sharpening edges by artificially accentuating color transitions and contrast is more damaging than it is helpful. To the untrained eye, bright, sharp colors look impressive. That's why these are set to VIVID by default. But as we all know, this is the most affected and inaccurate setting, and nobody should use it. Ever.
I'm not at home, but the settings on my 46" XBR4 are nearly identical to the ones lrstevens421 posted. I have noticed that the black level is much deeper on the PS3 system menus and games than it is on DVDs and Blu-Rays, so I set the brightness higher on the Cinema setting for that HDMI input and use it instead of the Custom when watching movies.
Also, no matter what I do I can't get the Nintendo Wii to look very good on this set. It looked way better on my old 36" Wega. Anybody had any luck? Too bad Nintendo didn't have the foresight to at least have the Wii output 720p...