While I prefer to keep things as simple as possible, sometimes the elements (like a hot looking red Ford Mustang) call for slick multi-light shot.
Tech Stuff:
The main light was a Nikon SB-900 on a stand to the couple's left. The sun was directly behind them, so other than some rim lighting, without the flash, they would be completely dark. The initial shots looked good, but the front of the car was still in shadow. I gave my spare flash to the best man, and asked him to aim it directly at the Mustang emblem on the front grill of the car.
I use the SU-800 infrared controller to fire the flashes. While you can use with the iTTL system, I usually just set the flashes manually from the controller, using the rear LCD screen to adjust the lighting levels. Being able to adjust the flashes from the camera is a real pleasure, and saves a lot of putzing around with the separate flash units.
Camera: Nikon D700
Lens: Nikon 17-35mm AF-S f/2.8
Light: Nikon SB-900 (camera right), Nikon SB-800 (camera left), Nikon SU-800 controller.