Call of Duty Updated Hands-On Impressions on GameSpot based on playing with Infinity Ward's upcoming World War II shooter at QuakeCon. Here's a bit describing the impressive impression created by their encounter with the dreaded King Tiger tank:

The tank itself suffered from an extremely limited field of vision, but each time we wandered in front of it, it would open fire, and as we headed back to the church, it turned and gave chase, firing an enormous shell that left us "shell-shocked"--a visual effect that causes your onscreen vision to blur and muffles the game's sound with a simulated ringing in your ears. Because the King Tiger and its ordnance were so close, the effect was especially severe and forced us into a prone position, which made creeping behind the nearest bunker a slow and harrowing business, indeed.