Found this while surfing around...it's next on my list of "learns how to do it".
If you shoot with one of the EOS–1 series cameras, there is a little known function you can use – multi–spot metering. The cameras have the four common metering modes – Evaluative, Partial, Spot and Centre–weighed, but a fifth, Multi–spot, gives you more control of your exposures. If you set the camera to spot metering, you can use the FEL button to register up to 8 spot metering points from within the scene. The camera will adjust the exposure based on these spot meter readings and provide a balanced exposure. It requires practice to make the most of this setting, but can provide exposure metering in situations where other methods may not be as accurate.
more tips can be found here
http://cpn.canon-europe.com/content/tips_from_the_pros.do![]()

1D Classic,1Ds, 400D. EOS-1n, EOS-5 Minolta Autocord,Yashica-A,Yashica-mat 66 Yashica-mat 124G ,Rolleicord IV & VB ,Mamiya C3,Mamiya C33, and a heap of other gear I keep collecting and collecting,Hi I am Steve and I am a photoholic
But it would be handy feature to use once you get to know its strengths.
