I appreciate the comments - not as one-sided as I'd expected either

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I've already flogged to death, at least to my own satisfaction, plasma vs LCD, and I think at 42", for movies and games, you cant really beat the recent panasonic plasmas for picture quality at that price. I think only the very best LCDs with LED backlights and local dimming etc are catching up to plasmas, and they are big money. At calibrated settings the difference in power consumption is less than, well, a 480 vs a 5870
I'm a fairly casual gamer nowadays, so maybe I'd get more out of the TV due to its other uses. But then I'm casual on the consoles too and don't really watch any TV. But GT5 will be essential! Then again I like having a decent PC and love my FPS's, and absolutely cannot get along with them without keyboard/mouse. Picked up FC2 cheap for the PS3 but soon put it down as playing with the pad was horrible.
Interesting point to consider scoring points with the Mrs and general psychological manipulation of her for my own wicked purposes

. Actually I think she'd prefer the PC! She doesn't care much for TV either and I could probably run a 24 or even 27" monitor past her as great for photo editing!
Decisions decisions. Still coming down on the PC side. Thanks for your time guys.
Liam