Shown on CBBC at 11:30 GMT – not half an hour ago – got to love the speed of the Internet.
This brand new clip features the newly regenerated eleventh Doctor and Amy Pond (presumably no relation to the duck pond in the clip) debating whether the pond in question can really be a duck pond even if it never has ducks.
The two are interrupted as the Doctor clutches his chest as he seems to be having some kind of physical problem with the regeneration (which we know from The Christmas Invasion can take fifteen hours to “set”).