Here's a quickie for those who want to know how some of us do it.

Start with a gradient, adjust to suit.

http://mediaservice.photoisland.com/auction/Feb/20042193792716497049044.jpg

http://mediaservice.photoisland.com/auction/Feb/20042199064194784204797.jpg

Add some noise, once again adjust to suit. (this will become your brushed effect)

http://mediaservice.photoisland.com/auction/Feb/20042198929334141103517.jpg

http://mediaservice.photoisland.com/auction/Feb/20042192471266838433247.jpg

Motion Blur it in the direction you want it brushed.

http://mediaservice.photoisland.com/auction/Feb/20042192444707906873872.jpg

http://mediaservice.photoisland.com/auction/Feb/20042191930599256598455.jpg

Add some shadows and maybe a tint.

http://mediaservice.photoisland.com/auction/Feb/20042196386331388591891.jpg

http://mediaservice.photoisland.com/auction/Feb/20042193108745555629095.jpg