adorama.com. It is a Canon 50mm lens with a 1.8 f-stop. At the bottom of this post I will put a picture of what this lens can do. :) Here is the rest of my stuff:
Camera: Canon Digital Rebel XSi (love it)
Lens: Sigma 28-300mm with 3.5 fstop
Lens: Canon 50mm with 1.8 fstop
Ext. Flash: Sunpack PZ42X
I have a few other accessories like remotes, tripods, and reflectors. I also share a set of studio lights with my sisters-in-law.
I focused on the "J" of my macbook pro... You can see that the blur starts before it even hits the M or the U!! Totally awesome! You have to be careful when you use the 1.8 when photographing people. If their face is turned slightly, the eye in the back will be blurry. I always like to keep both eyes in focus at all times. :-)
I hope this helps answer some questions and if you have more, feel free to leave comments and I will answer them! I love helping people use their cameras!! :-)