In my personal opinion, I really think extended warranties on televisions, especially CRT ones are a complete and utter waste of money.
I have recently bought a new Sony CS70 and the Sony shop I purchased my tv actually put me off buying the extended warranty!
Basically, extended warranties are expensive on this type of home entertainment. If a television is going to go wrong, it will usually be wrong at the start, or within the first few months, when you will easily notice imperfections as you study carefully your nice new tv(!) - in which case it's covered by the automatic 1 year guarantee. Other than that, unless you are unlucky (and ok, I expect people will jump on me now saying that this isn't true!!) but unless you are unlucky, tv sets usually last the remaining 4 years that a warranty will usually run for. Even if a fault does develop, it might only be something like on/off switch or something that you could call an engineer out to who would be a lot cheaper than a warranty.
I guess I have been fairly lucky in the past hence this point of view. Obviously people out there who have had nothing but problems will say I am talking nonsense - and I do respect this point of view if you've had problems - but I for one will not buy a warranty at the moment.
Remember: you can always take out a yearly plan with Domestic & General online which is quite often a bit cheaper if you really want to go down the warranty route.
Oh - and one final piece of advice - Please please - Don't get a "Mastercare" warranty from Curry's - in fact - don't buy from Curry's full stop - nothing but trouble - and if you ever need to call them out under the warranty - then heaven help you !!! (Based again, as you can guess on 2 x bad experiences with a Mastercare warranty - and on numerous websites detailing their failings!!!)
Hope this helps
Paul