Chris Marquardt wants to talk about high key and low key lighting, and dispel the myth that you need special equipment to get that kind of shot. The trick is to understand how the light is coming into your camera from the image you're trying to capture. You can use your histogram to see the distribution of the light in your photo. To get a good high key light, you need to alter it so that the peaks are 3/4 to the right. You can use exposure compensation as well.
Low key is the opposite. Use one light source and then put the light outside the field of vision, shining at the subject. That will create a nice contour of the subject. The camera will fight it, trying to get into the middle, but use exposure compensation to go one or two stops downwards. You know best because you know what you want.
Don't forget our current assignment - Fast! Take a photo of, about or otherwise concerning the concept of "fast" and then post it to the Tech Guy Group on Flickr. Make sure to tag it with the word "fast" as well! And if Chris likes it, it could end up on our next photo segment!