Our family enjoys David Macaulay books, from Cathedral, Castle, and Underground to The Way Things Work; soon we will have The Way We Work on our home science shelves, too.
The Way Things Work introduces basic science concepts, often using brief stories involving mammoths. It then has wonderful illustrations of all sorts of inventions that operate based on the concept introduced. (See my review on the Shelfari widget.)
The book has an accompanying video series. We recently borrowed the Electricity DVD from the library. Instead of just being a reproduction of the work, the video is actually an expansion of the mini-stories introducing science concepts.
If these were books they would be excellent living science books. Instead they are great animated science tales. My kids keep asking to watch them, so we'll be renting more soon!