If you are looking for PQ that's similar to the cinema in terms of saturation, color balance, sharpness, etc... lamang ang plasma, coz it has the soft and warm flavor to the image. But i don't think it has the resolution of the LCD, so for me, for BluRay and other Full HD sources, LCD beats plasma. I'm not just referring to pixel resolution here, but the actual details in the image. Side-by-side, the plasma looks softened on HD, particularly when there are small texts in the image. PS3 also looks sharper on an LCD.
For image as big as in the cinema, softening and image warmth is necessary. Imagine mo na lang gaano kabilis ka mahihilo sa sine kung naging very sharp and brilliant ang picture! Also, with image that big, details don't get lost by a slight softening, dahil malaki sobra. But for home viewing (except projectors), the image size-to-distance ratio is not normally as big as in the cinema, therefore IMHO if you need the same details as in the cinema, you need an LCD for its superior resolution. But I assume BluRay or other good source material, and not cable TV (which has flaws that are just revealed quite badly by resolution). However, details vs. color is still an endless debate, and boils down to personal taste.
But this is in general, and based only on the LCDs and plasmas I've checked out. There could be exceptions.