TV technologies seem to get more confusing every day. Tom's Hardware has a great article that breaks down the differences between LCD and Plasma. the article states:

Flat-panel displays are the future of television - whether consumers like them or not is another matter. HDTV, digital convergence, and high-resolution DVD will all have contributed to making CRT TVs obsolete within two years. That's not the case yet, but it is on the way. And if you're tempted to acquire a flat-panel TV, you will need to deal with another issue: the choice between two technologies that are complementary yet very different from one another: plasma and LCD.

Read LCD Or Plasma - What's Your Pleasure? Understanding Modern Flat-Panel TV Technologies