Photoshop Lens Blur Tool

For those of you Photoshop users out there, here is a cool tutorial I came across. It may be a bit complicated for new Photoshop users, but it doesn't hurt to try. Here is the first part of the tutorial:

http://www.tuaw.com/2008/10/07/how-to-use-photoshops-lens-blur-tool-for-tilt-shift-fakery-par/

Here is the second part of the tutorial:

http://www.tuaw.com/2008/10/08/how-to-use-photoshops-lens-blur-tool-with-masking-part-2-of-2/