I have an HP f2105 21" widescreen LCD. Max resolution 1680x1050.
At first, it took a little getting used to reading on the LCD for me, but once I got used to it, it was fine. For gaming and movies, not problems whatsoever. For work, I use about like... 2/3 of the screen horizontally. For example, this Firefox window is about 2/3 the size of my screen, and the same would be about with Word, MATLAB, Visual Studio, etc. Works great.