+1 . Some people freak out and get the walls dug out and coated when all they need is a load of dirt to return the slope near the foundation where the back fill has settled. That and some down spout extensions.
+2. I once "fixed" a basement leak at my mother's house with two bags of topsoil and a handful of grass seed. It was just that a low spot had developed and was holding water against the foundation wall. Build that up, put some seed on it, and done. I think I dawdled and spent 20 minutes on it.