So My wife says, "I'm around the corner from B&H do you want anything for Christmas?" I'm thinking SB-600 or 800.
In my searches for more info on each, I found a nifty little Lighting Techniques PDF from Nikon. Very informative. Even if you don't use Nikon read it. You might learn something new (unless you're idnic, the goddess of lighting). They explain the setups nicely and compare them against using only the on camera flash.
Aweeee Eugene, you flatter me! :D That's a nice link, helpful for many. Would you mind also posting it to the Portrait Lighting thread? I'm sure many people would appreciate it. :)
Just so everyone knows, and understands, lighting is not brain surgery.
What ever info you use to learn the basics, the general knowledge from these sources are not written in stone.
There are as many ways to light an object or model as there are many ways to edit an image.
As I keep saying, there are no correct ways to light something, but there are plenty of way to light something incorrectly.
I have worked with many world famous directors of photography in the career that I have chosen (and am disappointed with). Every single one of them 'light' in a very differant way. Sure, they use basic lighting techniques from a fundamental pool of knowledge, but a 'three' point lighting set up may be as differant from one DP to another as a Ford is differant from a Chevy.
Not to mention the quality of light that each person has at their disposal.
Bottom line is this....
....learn the basics, chuck the basics, experiment to find what you like.