How to do this style in Photoshop CS6?

[--rap--]

I like the ads of The CW this Fall 2012. It's a photo where some parts of the original photo were blown up and black & white then the center of the ad is the colored and original photo. It's like this, photos from Gossip Girl series finale promo https://www.facebook.com/photo.php?fbid=...permPage=1

https://www.facebook.com/photo.php?fbid=...permPage=1

https://www.facebook.com/photo.php?fbid=...permPage=1

Pls help me. I want to try this in some of my projects. Thank you!

[me]

Duplicate the background layer. Resize the duplicated layer (Background copy) to fit like you want it. Blur the background layer, add effects to the duplicated (Background copy) layer. Done.