I've had an 18" microtek 815C lcd screen for over a year. I absolutely love it. Now it is not perfect mind you, as once in a great while if the action is super fast it might get just a slight tad blocky for an instant or two. But, it uses just a few inches of my desk top and uses only around 50 watts of electricity to power it.
Personally, I'll not go back to a crt monitor, at least for what I do with it.