I've heard many people say they make pesto and freeze it in ice cube trays and put the ice cube trays in a big baggie. Then you can just pop a cube out at a time and add it to recipes.
Also, I love love love adding basil to salads. I think it loses a lot of flavor when it's dried.
Do you add the oil when make the pesto and freeze it? I heard that you should make the pesto but not add the oil. Then freeze it and add the oil after you thaw it out.