Bokeh (derived from Japanese, a noun boke 暈け, meaning "blurred or fuzzy") is a photographic term referring to the appearance of point of light sources in an out-of-focus area of an image produced by a camera lens using a shallow depth of field.
I've really tried to get the Depth of Field thing down, blurring the background and getting the Aperture dialed in just so. Took purchasing a new lens to hopefully correcting this and help out on getting better Bokeh in the future.
My old lens couldn't open up enough to get a really good depth of field shot that I was after. My new 50mm f/1.8 shot be a big help and I have really enjoyed it so far.