Iphone pinch zoom?

[phones]

I was talking to a buddy of mine at work today about how he found a hack/tweak/program that allows you to zoom like the Iphone by using two fingers and sliding them away from each to zoom out and so on. I asked him where he got it and told me from here, I have searched and searched and can't find it. If anyone knows and can post a link or give me a hint then I would really appreciate. No I am not an Iphone fanboy but think this would come in handy all the time.

Thanks -Phones