Hi, Chris,
When I have the time (and patience -- which I admit isn't that often), I use Jonathan's technique.
I have done some rudimentary experiments which have given me some "rules of thumb" to go by in certain situations that generally get me pretty close to the correct ETTR exposure for those fleeting moments. If a scene has a lot of bright, light areas in it (excluding specular highlights), I know that my camera will tend to underexpose, so I give a standard extra half-stop exposure. If the scene is overall on the dark side, I will give a half-stop less exposure. For most "normal" scenes, my meter seems to do a pretty good job used normally.
But whenever I have time to do so, I check the histogram and redo the shot if adjustment is needed and the scene is still worth shooting.
So basically I'm using the same skills as "before digital", but now I check with the histogram whenever there is time to.
Just my 2 cents.
Eric