I should have some pics to post sometime tomorrow or tuesday... Sorry about the delay on that, but someone had to borrow my digital camera in a pinch.
Anyway here's some more... I went into the service menu and as expected (with most such microdisplay sets) there are no adjustments for screen geometry. It may be possible to compensate for the pincushion by a phisical adjustment inside, but it is very slight and only noticeable in a few special situations. I can see a hint of it in the bottom right corner in my Dish channel guide or on other such graphical menus with straight lines. The pincushion is worse at the center of the screen than on the outer extremeties, but some such distortion is to be expected given the size of this projection. In some ways I'm wishing I hadn't brought it up as it may steer a few buyers away from this set for what is really a non-issue. I have yet to see *ANY* projection display with perfect screen geometry, it doesn't happen, period. So this isn't anything to worry about, but for those who may buy this (or any other rear projection HDTV) be aware that minor geometric flaws are going to exist. If you want perfect screen geometry, or as close as you can get to it, then LCD or plasma flat panel displays are your only choice. Perhaps the $40K JVC LCOS studio monitor is pretty good too.
I don't have standard cable and OTA reception in this area is very poor. I can't receive any OTA HD. OK. My TV is delivered to me via Dish (I'm a recent convert from DirecTV, but that's another story. But one of the deciding factors was getting my local channels in HD).
@ BMELVIN :
Standard definition channels look pretty good on this TV. However it does suffer from the "screen is too good" affliction that most HDTV sets (especially 1080p sets) have to contend with. It shows every single flaw in the image, every compression artifact, everything! And you do truly see how bad an SD source is. The clarity on this TV is very, very good and the difference between a top DVD transfer like the Superbit SpiderMan 2 vs. a good HD-DVD transfer like Serenity, is night and day. I know the HD-DVD and DVD comparison is a bit off key, but I'm trying to state that the resolution on this set, even with the pixels large enough to occupy the 71" diagonal space, is very very good. Your SD sources and standard cable will look OK... They will look every bit as good as what the transmission signal allows... What does that mean? Your older TV will have a much more pleasing look to the SD channels I fear as it doesn't have the resolution and is much more forgiving as it does a lot to smooth over the undesirable. FWIW, SD sources on this set look every bit as good as they do on the Sony SXRD and Qualia LCOS sets. Take that as you see fit, but I doubt you'll find SD or standard cable to be as pleasing on this set as you do on an older CRT based system.
I gave the internal speakers a test. IMO, they're not too bad for internal TV speakers. Very usable for regular TV watching for things like the news or even regular TV programming that's broadcast in regular 2.0 stereo. I'm a poor judge of this at times, I'm somewhat of an audiophile and tend to think a lot of sound systems sound pretty bad, even when most people are pleased with them. I did detect a little bit of hissing and thought the low range was somewhat muffled and distorted, but they didn't sound too tinny or bright. I don't know what else to say here... They're the typical built-in speakers that (IMNSHO) shouldn't be a part of any TV.
I haven't had a chance to try connecting a PC yet... I will do so in the next couple days as I'm curious as well. Although, I probably won't be using it for this. There will be the overscan issue to contend with, which isn't a problem with newer nVidia hardware and drivers. Since the HDMI, Component / RGB inputs all share Tuner #1 you will only be able to do PIP with a PC and one of the two sources that are assigned to Tuner #2. Those two sources are the coaxial inputs for OTA and cable. If you have standard cable, or feed your OTA reception right into the TV, then you won't have an issue. but as I covered in a previous post, the PIP on this TV is severely crippled.
I will try to take a picture showing the pincushion. As I've said, it's relatively minor and I would expect all these larger rear projection displays to have this or other similar geometry issues. Even the Sony Qualia 006 SXRD 70" is known for its radial parabola distortion (looks like pincushion, but only present in the middle of the image).
Other notes that may be of interest... Viewing angles on this set are very good, better than I expected. Horizontally, it's every bit of the 175 degrees they claim and there's very little falloff at all and you probably have to be at 150 degrees to start getting any falloff. Vertically, the viewing angles dissipate much quicker, but nothing that should cause any problems. My daughter is just over 3' tall and has no trouble seeing the TV when playing on the floor and it sits up a bit high in our room too. I can stand on the second floor loft and look down at the TV and while it does dim from this angle, is still perfectly watchable. Our primary seading position is about 15 feet back from the TV and we have a higher than average cocktail table in the room so the TV sitting higher works great. It's in a niche on a built-in cabinet with the cabinet top right at 24". That places the bottom of the screen about 30" off the floor and the top of the TV is right about 6'. It provides excellent viewing position whether standing or sitting in the room.
And for those with DirecTV and Dish HD receivers (since both seem to have HDMI issues), I am having some difficulties with my Dish ViP 622 and its HDMI output. About 70% of the time, the 7178W just reports a weak or no signal. Running off component works fine, but the picture isn't as good due to the digital to analog and back to digital conversion. What's weird is that the first two days, the HDMI worked just fine from the 622 HD DVR so I didn't report this issue right off. Now it's intermittant. I know the HDMI out works just fine because I'm splitting the signal and sending it to an LCD TV in the next room. ...And it's not the splitter either.
No connectivity issues with the Toshiba HD-A1 that some people have reported with other Samsung HL-S series TVs, but I also have the latest firmware update. For those with this player, be sure you connect to ethernet if you have decent internet access and you can tell the player to update its firmware.
I'll post my pictures and hopefully wrap up all my initial thoughts here in the next couple days. But so far so good and I'm happy with my purchase even though some of the issues I've encountered (mostly the PIP situation) may give other buyers something to think about.