The reason for connecting the live and neutral sides properly is that some TV sets, if you reverse the polarity of the flex, you are making the metal "chassis" live.
I don't know if this is an issue with modern TV sets but some old sets used to have metal cabinets, so....there probably could have been a danger of shock.
[This message has been edited by SvenNYC (edited 02-28-2005).]
