Thanks for posting this information, I've been using these settings with our 61" version of this model(HL-S6187W). They work great, although I've made a small tweak; I cranked up the Contrast to 60 as 30 was just a bit too dull for my taste.
Our DishNetwork DVR box and PS3 are both connected over HDMI and use those exact settings. Our 360 is connected over component and is very dark, so I've cranked the brightness to 55. Not sure if this is because I am using component, or just the 360 outputs darker.
What follows are the picture settings we found ideal for viewing the Samsung HL-S5687W projection HDTV in a darkened room with a 1080i source connected via HDMI. Remember that your ideal settings may vary with room lighting, source, and personal preference.
Picture mode: Movie
Color Tone: Warm 2
My color control: [no change]
Color Weakness: [no change]