My mother says that the secret to a poached egg is to add a drop of white vinegar (another use for Geoff, aside from cleaning the coffee pot) to the water so that the egg won't sink. Don't know how true that is, but she does make a very nice poached egg.
Hmmm I read someplace the vinegar was to hold the egg white together, but it is definitely part of making good poached eggs.
Speaking of which (and this is not necessarily a breakfast thing) but poached eggs on cooked spinach is delicious.