I have a 3 YO LG Plasma 1080P set from Sears. I bought the warranty which just expired. I felt it was cheap insurance, although I had no trouble. Got the set cheap, ($800) and the warranty cheap (less than $200). I hung it myself, so I saved the install cost, therefore, warranty was free. How do ya like THAT logic?
My other experiences with extended warranties:
Had a Maytag refer bought in 2003. Got a 4 year warranty. The compressor ,of all things, went out just before it expired. Got an $800 repair for $200 in that case. Bought a Mitsubishi VCR in 1998. It went out 1.5 years into the 2 year. Got a free one there too, BUT I'm not as convinced that I made out, since the warranty was $150, and a new VCR was $75 by then. Still have the replacement VCR though, and still use it.