exactly. LCD's aren't good for gaming because they have a slow response time... that is, how long it takes for a pixel to change from one color to another... usually around 20ms. a CRT of any kind does this almost instantaneously and is much better for games where reaction time is important.
if you play a game or even watch an action-oriented movie (with fast scenes), you'll notice a general blur when things move fast. getting a good, flat 19" CRT for around $300 is much better than getting a cheap 15" LCD if you play games. i'll buy an LCD the day they get response times less than 5ms.. which might be in a few years. until then, flat CRT is the way to go, imo.
if you just do office-type stuff on your comp, then an LCD is good... sharper picture, smaller footprint, and uses less power. their color accuracy isn't very good for graphic artists, though.