Beginner's Bible Video Series - "David & Goliath"
Update 2015: DVD was re-released - in a collection called "Beginner's Bible Vol. 2. It includes 3 of the original videos: Creation, Noah's Ark, and David & Goliath, 610583501797.
Update 2019: Looks like they may be taking this out of print as Beginner's bible are now posting full episodes on YouTube, David & Goliath can be found here https://www.youtube.com/watch?v=O7phn_d0Cok .