Andrew Putch does an excellent job of explaining lift, drag, and other aerospace engineering concepts in a video that he developed while interning at the NASA Dryden Flight Aeronautics Academy.
Putch, an undergraduate in Aerospace Engineering at Illinois, wrote, directed and edited "Proving Prandtl - With a Twist!" Putch was a flight test engineer last summer with the PRANDTL-D Team (Primary Research AerodyNamic Design to Lower Drag).