Make a flying ghost in Blender. Various techniques are demonstrated in this video, including cloth simulation, weight painting, simple 3-bone armature posing, keyframe animation, and some Graph Editor tricks. Suitable for beginners and advanced users alike.
Please note that this tutorial was made with Blender 2.73a and is not compatible with 2.74 because of changes to cloth simulation. You can download version 2.73a from the Blender website: