I was getting water running into my top-freezer refrigerator, classic sign of a clogged drain hose. So I used the classic "easier than moving the refrigerator to access the drain hose" technique of emptying the bottom of the freezer and pouring some boiling water into the freezer.
Worked like a charm - water immediately started reaching the drip pan under the refrigerator, and I've stopped having water drip into the refrigerator compartment.
Of course, I now have about an eighth to a quarter inch of ice built up in the bottom of my freezer. What do I do: let it stay and just expect the defrost cycle to eliminate the ice, or get rid of the ice myself?