The 17 inch widscreen LCD as used in the Toshiba, Gateway, Sager 17 inch notebooks is a Philips panel rated at 25ms response. It's pretty similar in most respects to the 16 inch UXGA ALienware currently sell in terms of brightness and viewing angles, but far better for pixel response. Of course the Xbrite Sony screens and the Toshiba Clear superview screens are much much better than any these. Actually, I was pretty shocked at how bad the UXGA 16 incher in the new Alienware is. Considering how expensive this system is the screen is seriously crappy and very unpleasant to use for gaming which is the supposedly the point of the bloody thing. I for one would recommend against buying one for that reason.
Oh, and as for the comment that games don't support widescreen, that is completely incorrect. Most new games support widescreen out of the box, and just about any older game can be tweaked to support widescreen including all quake3 engined games (including Call of Duty etc by a simple config file edit). Even the latest 1.6 version of Counter-Strike natively supports widescreen for god's sake (it looks great at 1920 x 1200 on a 15.4 inch widescreen panel by the way.) The only people I have ever seen saying saying games don't support widescreen are those who have never properly used a widescreen notebook. The Toshiba referenced in the post above was probably being run by some idiot who didn't have it set up correctly, that is a depressingly common situation.
Go here to find out more:http://www.widescreengamingforum.com/