I started doing a design a little while ago for a friend named Robbie Cooper, and I decided in my design to incorporate some depth and 3-D illustrations to help give the site more pop.  While going through some tutorials in the various blogs that I read, I noticed that this is a design trend which, I believe, will become popular this year, if it has not already.  Here are some examples:

CSS-Tricks.com

Robbie Cooper (by me)

GayaDesign.com (@gayadesign)

Sarah Longnecker

Cognigen Corp

Do you know of other examples that I missed?  Leave a comment below or tweet me @esamek.