Doctor Who: 17 Cool Details Steven Moffat Just Revealed About The Eleventh Hour
2. Matt Smith's Hand-Double Appears During The TARDIS Scene
Once the Doctor's brand-new TARDIS design has been unveiled, he and Amy circle around the main room for a few minutes and have a conversation.
During this scene, the Doctor fiddles with all the new bits and bobs on the central console - such as a typewriter and a miniature gear stick - and if you look closely at his hands while he does this, you might be able to spot a small continuity error.
Those hands, very clearly, do not belong to Matt Smith, and furthermore, the jacket that's used in the hand-shots doesn't match the jacket that the Doctor wears in the rest of the scene. The image below shows Smith's hands, and what his costume should look like - now compare it to the image above. Even his gold watch strap is missing!
It looks as though these small moments were filmed as pick-up shots when Smith (and the right jacket) wasn't available. Or, the crew didn't feel the need to call in their main star just to record a few seconds of footage.