I used Turtle Wax Jet Black. Overall I'm pretty pleased considering I bought it on liquidation at a national chain for just a few bucks. The box contains the product itself (a liquid), a pair of gloves and a sponge.
You need to degrease the surface being treated with simple green or equivalent. Then you give 3 or more light coats of the product at 10 min intervals. I did the roof racks, rails, part around door handles, mirrors, trim around the windows, tailgate glass handle, tailgate trim around the button/keyhole, the part at the back of the roof that connects the racks and holds the wiper, and windshield molding.
All those were pretty much faded grey on my car. It all looks black and shiny now. I think the product works much better on textured surfaces such as the tailgate handle and the part around the door handles. The smoother parts such as the rack and mirrors look a lot better than they did, but if you get really close you can see application marks.
It's easy to apply, and it looks much better than it did before. I suspect some of the guys obsessed with detailing would do a better job than I did.
We'll see how it it holds up to the weather. So far, it gets a B+.
Sorry I didn't think of doing before/after shots.