Congratulations on your purchase, and thanks for choosing Samsung!
While each environment is different (big room, small room, lit room, dark room, etc), C|Net does offer a HDTV Picture Settings Forum listed by model. Check it out, and you may be able to find your model of TV here. Both C|Net reviewers and picture enthusiasts can share their "ultimate settings" online with everyone.
Just turned on my new TV, and I wanted to see if anyone had an opinion on what the optimal viewing settings are. Brightness contrast etc.