Blu-Ray player will work just about any TV. Although it is intended for use on HDTV's most likely that is what you have it its a flat screen, either LCD or Plasma most likely. It is a high definition disc. You will be amazed at the quality of a Blu-Ray player when it is hooked up to an HDTV, especially on movies like Cars, Ratatouille, Pirates of the Caribbean. I suggest going to a Best Buy if you have one nearby, most of them have a display set up showing Blu-Ray on a HDTV it you will be amazed at the quality.
Another great thing about Blu-Ray players is that they can still play your old DVD's and they will look even better than they do on a regular DVD player. your existing DVD player will NOT play Blu-Ray Discs though.
The only issue right now is that they are a bit expensive, $300 and up, but hey my first DVD player was $300. You might want to go check out a display in a store to see for yourself, and probably hold out on buying one for a few monhts to see if the price goes down.