I have had this TV for two weeks now. Woohoo, I'm glad I waited!
A little background... in October 2010 Amazon had this television at a substantial discount (<$4,000). At that price, I got a tremendous TV. I'm not sure I'd be so inclined to give it 5 stars if I paid substantially more for it. At the end of the day, you can get a 63" Samsung 3D Plasma for <$3,000. You pay a couple bucks more a year in energy costs to run the plasma and have to worry about burn-in in the first 100 hours or so, but you arguably get similar or even better picture quality for less money.
More background... I'm inclined toward LCDs and specifically Samsung LCDs. I've always been scared off by potential burn-in issues on Plasmas. I've also tried Sharp and Sony LCDs briefly and never got the same brightness or saturation out of them. I own the
Samsung LNT5265F 52-Inch 1080p LCD HDTV. If you read the reviews of that set, you'll find it is one of the highest rated sets out there. I love mine.
So the reason I've taken two weeks to review is that it took me that long to adjust the settings of the new 65" so that I felt they were as good as the LNT5265FX that I have downstairs. For a long time I was worried I wasn't going to be able to match the picture quality I had with that set for richness and naturalness of color. The good news is that I have indeed matched it and this set delivers the same vividness and brightness to match what is arguably the best LCD set Samsung has every made. At the end of the day, it all comes down to picture quality and if I couldn't get it as good as I have it with the 52", I was going to be disappointed.
Now the other positives... the set is incredibly thin and the screen is simply huge. I watched Shrek in 3D and found the 3D effects worked great. I found that depending on your settings you may experience some cross-talk, but adjusted properly it was great. In particular, I found the dynamic motion enhancement seems to help 3D. But I haven't experimented enough with adjusting the 3D picture quality to really say definitively. The 2D->3D conversion works impressively well and my Comcast ESPN 3d channel worked great too.
I've put it in game mode and the responsiveness seems comparable to a computer monitor (I have a Mac Mini hooked to the TV as well).
If you read other online forums, you'll see other folks have had problems with uneven vertical light bands (this set is edge-lit from the top and bottom), flashlighting where portions of the screen burn brighter, warped bevels, and dead pixels. I have one partially dead pixel, but otherwise I've had none of these problems. If I put a very dark gray solid color screen on (easy to do with a computer) I can see some light output inconsistencies, but these disappear entirely for standard content.
I also have the camera for on-board skype. Skype app works great and you can receive calls while watching TV. I'll caveat that the one skype session I did the remote party couldn't see me, but I'm not sure the reason. I'm hoping there isn't an incompatible video codec with this particular camera. For the cost though, probably would have made more sense to get a USB camera for the Mac Mini rather than bothering with Skype on the TV, though getting calls while watching is a nice feature.
Overall I got what I wanted... a 3D capable 65" set with comparable picture quality to my gold-standard 52" Samsung LCD.
Here are the settings I finally settled on for standard broadcast TV (YMMV):
Backlight: 15
Contrast: 90
Brightness: 46
Sharpness: 32
Color: 46
Tint: G44/R56
Eco solution: off
Black tone: Darkest
Dynamic contrast: off
Gamma: 0
Color space: native
White balance: r-offset 24, g-offset 24 (all others 25)
Flesh tone: 0
Edge enhancement: off
Led motion plus: off
Color tone: warm2
Digital noise filter: low
Mpeg noise filter: medium
Film mode: auto2
Auto motion plus: off
Smart led: standard
Hope this helps!