I was sort of impressed with the OLED TV (55 inch) 1080p at Best Buy yesterday, although I'm sure that part of that was just the video that was being played. It had a slight curved screen. Don't remember the manufacturer. The price was around $2500 I think. The salesman said a 65 inch was around $4500.

I can always tell when I'm watching a blu-ray on 720p TV, so yeah, there is a difference.