That's the BBC series you're talking about, Shadorne?
Yes it is currently the best selling HD-DVD and Blu-ray title on Amazon.
I agree with Johnny...some stuff is excellent and some is mediocre and barely much better than DVD. A lot depends on the individual production quality.
I am watching on 1080p on a screen with full 1920 x 1080 pixels on the screen. Any HD TV with less than the exact and appropriate pixels (to match the source) will not quite give you the full monty.