A little bit about how this is done. This particular shot's bokeh was received from a back lit lemon leaf. lemon leafs have small pores all over them. the back light shines through these pores, and the fact that they are outside the depth of field, cause them to appear in the shape of the lens's aperture.
Check out my Wonderland lecture (subtitles available) - Nadav Bagim - WonderLand lecture - PhotoX2012
More info and photos from the WonderLand series at www.AimishBoy.com/wonderland.html
you are welcome to visit, and stay tuned, a video tutorial is in processes (: