PyobjC?

What is PyobjC?
I've heard it uses the same syntax as python but allows you to access Cocoa frameworks and that it also makes osx native applications using interface builder.

Does it use the same syntax as python or like a seaperate language?

Can it be used with Xcode AND Interface Builder? for GUI's?

Does it create .app type formats?

I would LOVE to use interface builder for my programs...