I just picked up the 32" EX400 from Best Buy today in hopes of using it as a PC monitor, and everything seemed to be going smoothly until I launched a game. Everything looks very pixelated and just ugly, where as my desktop and all other programs were crisp.
It's connected to a GTX 285 via HDMI (in HDMI Input 1) and I've double-checked that it's set to 1920x1080, and I believe I have all the TV settings set correctly as well- Graphics, Full Pixel, Sharpness 0%. It also only seems to be when the games are in fullscreen, since when they're in windowed mode everything is crisp and clear.
Edit- Nevermind. I switched from HDMI to VGA and it works now. Not sure why HDMI didn't though.