Here's a fabulous video made by the FAA back in the 60's called "How Airplanes Fly". It's about 18 minutes long and includes a discussion of stalls (including some wind-tunnel smoke video so you can see what the air is doing).
It's not just about stalls though. Despite it's age this video is a great summary of how an airplane works and is well worth watching... … Continue reading the story "How Airplanes Fly"