Two Canon 5D Mark II camera bodies. I alway have two with me. One for back up, and sometimes I use two cameras during weddings with a different lens on each.
This is my first child. My baby of all of my camera lenses. The EF 50mm f/1.2L lens. I use this lens probalby 85% of the time.
EF 70-200mm f/2.8 L IS Telephoto Zoom lens. This is my second favorite. It works perfectly for weddings where I want to stay non-obtrusive and capture candid moments.
Canon EF 85mm f/1.2L - This lens is magical. The backgrounds and Bokeh you can achieve from this lens look like paintings. It's perfect for portraits or staying back for candid moments.
Canon 24mm f/1.4L - This is a great wide angle lens. But it's not TOO wide. Its perfect for showing the whole view of everything arond. It gives a unique "story telling feel" with each photograph. The images are pin sharp and crisp. I love this lens.
Speedlight flash - I try not to use flash and use natural light sources as much as possible. I am able to go without a flash most of the time because of the super fast lenses listed above. But at dark wedding receptions, a flash is a must have. I also attach a battery pack to my camera so I can have quick multiple flashes without the worry of replacing my batteries all the time. I ALWAYS carry extra camera batteries and AA batteries for my flash pack as well.
The Shootsac. This is a great lightweight bag that holds all of my lenses snugly with easy access to them for quick lens changes. I also have a large bag that stores all of my photography supplies I don't need all of the time - but this is the bag I ALWAYS wear while I am working so I can move around easily and have the things I need on hand.