When I bake, I measure as I go, but I do pull everything out of the pantry and the fridge first.
I kinda do the Rachael Ray thing, where I grab as many things as my arms will hold, and set it down on the counter.
If I forget something, it'll usually jog my memory when I go to put it away, as in "Did I add this baking soda.....?
Same thing when I cook - I'll chop everything at once, and set them in little piles around the cutting board, so that once I start to cook, I don't have to stop. (Very important when stir-frying!)
Can't be bothered with all the little mis en place dishes - I don't have a dishwasher, and have to handwash everything smileys/smile.gif