Exactly why you should consider buying LCD rather than Plasma. Plus also with plasma, you don't have that risk of a "Burn In".
With LCD you don't have that risk, and your longevity is much longer(depending of course how many hours you watch/game with your TV)
I have a theory towards LCD TV's.
Let's say watching TV was your full time day job and you watch it 24 hours a day 7 days a week. And an average LCD TV set lasts 60,000 hours, so at the end you would only achieve 7 years of watching
On the other hand you have a job/life/family and you watch 8 hours/day or less, you can extend the lifespan of your LCD TV set by almost a decade or more(to maybe about 20 years)