Is your TV one of the new 120Hz ones? If so, try to look at the movement and depth of the image. It looks like news or sports, right? I noticed it on my sister's set, not knowing that hers is 120Hz, and couldn't figure out why the image didn't look right until I saw it in a store side by side with a standard 60Hz set.
If your set is 120Hz, that may also be contributing to why you're noticing these things now.