Someone claim they can see ghost in fast action scenes. But the major complain should come from Gamers, and those serious gamers.
For videos, such as soap operas, none what-so-ever. Find the cheapest brand name, and forget about the mS "difference".
Read this: http://www.practical-home-theater-guide.com/lcd-response-time.html
Further notice: traditionally speaking, fast response LCD has poorer color because of the LCD panel property. If you see a 2mS with viewable angle not 178 to 178 degree, you know you are looking for a 2nd, 3rd tier products. If you care about color, don't look for mS.
FYI, best LCD still sells for over $1,000 for a 21" http://www.wolfcamera.com/product/EP5131931.htm
or this 19" for $1,600.
http://www.superwarehouse.com/EIZO_ColorEdge_CG19-CH1_19_LCD_Monitor/CG19-CH1/p/1481482