Teehan+Lax's iPad GUI PSD →
I completely agree with Neven Mrgan here. Please pass this on!
I’m linking to this attempt at recreating the iPad UI as a warning, since you may see it linked other places; the warning is, don’t use this for any sort of production work. It was a lot of effort Teehan and Lax to put this together, but that doesn’t change the fact that it was a sloppy effort.
Bevel and Emboss used for shadows. Objects not snapped to grid. Incorrect elements (the all-white selected icon in the tab bar). Plain made-up elements (the wide search bar).
This is perhaps helpful as a quick wireframing resource, but like their iPhone GUI document, it’s unacceptable for generating resources for your application.