I'll second the (Samsung) 204B:
* 1,600x1,200 Native/Maximum resolution
* 5ms Response Time (reviews that I have read suggest this is accurate including rising and falling)
* Great aesthetic design
* Rotatable panel for viewing photos and documents
* Sexy, thin bezel with unobtrusive, easy-to-use controls
* High Contrast Ratio (800:1)
* Samsung 3-Year (U.S.) Warranty
* MagicTune software makes it a snap to select various modes for Internet browsing, Movies, Gaming, or Custom settings
* MagicBrite software makes it a snap to adjust monitor settings, although the default will work great for most users
* Price is competitive to other 20" LCDs' out there
This is my third Samsung LCD, and ("knock-on-wood") I've never had a single dead or stuck pixel in any of them. My previous Samsung LCDs' were the 172T (great picture but too slow for fast FPS games at 23ms) and a 172X (12ms, so fair for fast FPS games but by no means outstanding). Awesome picture though. My daughter has inheritted the 172X. 172T is in storage as a back-up unit.
BF2 and DOOM 3 look and play awesome at 1,600x1,200 with everything cranked-up.