Yeah, I think the verdict seems clear between the two choices.. PS3.
Since it's true I could care less about console gaming.. My interest in gaming is exclusively PC based. What I'm going to do first is try first is running a long HDMI cable from my PC to my tv. Then running clone on the two displays. Switching to that input on my plasma when I fire up Hulu ect.
What this would mean though, is I have no way for people in the house to do two things at once. If someone wants to watch Hulu HD on the tv, that means the PC must also have fullscreen output of the same thing. You could start the video, then go in and change the settings around from clone-view. This is a possiblity at least. Cloneview keeps it simple though for anyone involved.
If I'm not happy with this solution, I'll go ahead and get a PS3. I already own Playon (bought it to try with my Samsung PN50B650's DLNA implementation).
Not only do I have little interest in console gaming, but also little interest in bluray. Which is why I think I'm going to try this first after the Radeon 5870s are released shortly. They'll have multiple native HDMI ports and DVI for my PC/TV as well as ATI's hdmi audio.
Sitting at the PC is solved by using VNC on my laptop from the couch, something I already do to move files into my Samsung PC Share directories.
The reason I don't just use my current PC as a dedicated HTPC or build another one is that I don't want to maintain two highend PCs. That's basically why I was looking at a prepackaged solution in one of these consoles. I'd rather put all that money into 1 rig when new things come out than maintain 2 pcs (stuff like SSDs, the 5870 ect). I'll feel less guilt that way.
As far as my dvd collection, I'll rip them to my PC and play them through Samsung PC Share or directly over HDMI. Blurays can be done the same way, either in a $99 PC bluray drive or ripped and streamed.
The reason I came to this conclusion is because I think Playon and others will end up playing cat and mouse with media companies. Also I won't be dependent on media codec conversions to a set top box. Playon doesnt support HuluHD streams either. I welcome thoughts on my plan here. And thank you to all who are chiming in about the 360 vs PS3 debate. I think it's clear that for me, the PS3 makes more sense if I need that.