It's absolutely the worst screen in the world. Imagine taking a screen door and shoving dog poo into the screen and then look outside during a sunny spring day. Oh, but shove needles in your eyes first, and have hundreds of angry bees stinging you. That's almost as bad as the display on the Air.
That's only part of it, though. You have to have the dog poo on all the window screens in your house to appreciate the full effect. The angry bees you're talking about? Well, they've dipped their stingers in ghost pepper extract before stinging Also, get one of the child carrier backpacks and have a small chimp sit in it and punch you in the back of the head repeatedly while walking around getting stung and trying to look out your windows. Only now are we even beginning to get in the same ballpark of how bad the MBA screen is. Looking at it even makes Chuck Norris weep and plead for mercy immediately. It's reputed he'll say "uncle" preemptively if he hears an MBA is on premises (unless he can verify it's closed and hooked up to an external display).