Depends on the person, type of display you're coming from, the game platform you use, and even the source material. Some are more susceptible than others, and certainly those coming from CRT are likely to notice it more. I have also seen some saying they cannot handle most any non LED LCD with the Wii motion controllers. Check the Input Lag Wars thread on the AVS forum, there's lots of talk about it (they talk about more than just input lag).
I came from a CRT, and am now on a Panasonic TL-C32U3 (32" Alpha IPS LCD). I notice subtle ghosting and blurring at times, and occasionally it bothers me, but I've also noticed it can depend on the quality of the source material or broadcast. For instance some games when played on an LCD require VSync or you get noticeable screen tear. That alone is MUCH more significant on LCDs than CRTs.
I know they're not the same thing, but sometimes enabling Vsync in some games makes the image not just less susceptible to tears, but clearer, as if there's less jitters and blur. Skyrim is one of those games.
Personally I long for the day when LCDs are replaced with better tech. It's a big part of why I kept my TV purchase under $350.