I do and always done the basic pyramid workout....increase in weight while dropping reps. usually 4 to 5 excercises of 4 sets.
Sometimes i just feel like changing it up and just stick to the same weight with high reps. A friend was doing these drop sets the other day but he said he just does them every once in a while, starts with the heaviest, basically what i do the other way around. What are they for and what can be expected from them?