Yes, Ziz is correct. Almost all of the time it isn't a problem with the source but in fact the TV you are watching it on. Many HDTV's now have 200hz (or greater) motion. This is supposed to eliminate motion blur and judder but will give the "video" look you mentioned. I have it on my Samsung HD3DTV. On default setting it makes films look like video. The first thing i watched on it was one of the new episodes of Doctor who and the film look wasn't there.It has that 70's Doctor Who video look. But luckily you can adjust /turn it of. The problem was gone and HD films once again looked like film.

Oh and don't get me started on that Predator Blu-Ray with the plastic faces.....

I love HD. It's just evolution baby ;)