I know I've said it a time or two, that someone is so bad at cooking they can't even boil water. A quick Google search for "boiling water" turns up tons of eHow-type pages on how to do it. But there really is more to it than just putting a pot of water over heat and waiting until you see bubbles (or there CAN be more to it, anyway).
Here's a post on, "Everything You Ever Wanted To Know (Plus More!) About Boiling Water" by the Serious Eats Food Lab.
Don't laugh, there's some interesting stuff there.