Flying cats.

Here's my favorite.

[via Geek Press]

http://icanhascheezburger.com/
seriously, check it out.

this is the best one so far:

...So, when will pigs answer the challenge?

Heh the cat looks terrified ^_^;

This one from icanhascheezburger cracked me up.

Link to Geekpress iz bad

Heh the cat looks terrified ^_^;

I don't know about that, but it certainly looks amazed and appalled.

Given now generally expressionless cats are (other than ear position), you have to wonder what its normal expression is. It doesn't even look real.

OMG that is going to end up being a forum avatar for millions.

But yea, my first impression was a Photoshop touch-up to enhance its expression of bewilderment.

Given now generally expressionless cats are (other than ear position),

Ironically, I find cats' faces quite expressive. They seem to have almost as much expression about their eyes as humans, and I've always found people's eyes far more revealing than, say, how they hold their mouths.

That said, the ICanHasCheezburger site does feature some 'shopped pics. Most of them are fairly easy to spot -- at least, for someone who finds cats' faces naturally expressive...