Jeff's Marathon Diary: The Clock Strikes Twelve

[Primetimer]

Matt Smith and the Doctor Who Marathon Diary bid a heartsfelt farewell.

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[ApathyMonger]

Paul McGann was involved in the anniversary, just not the main episode. He got a short that showed his death/regeneration into Hurt:

Moffat has mentioned wanting to do more of these, but probably not with McGann.

[kalamac]

When River Song showed up and started calling The Doctor 'Sweetie', the fans at my house collectively decided that it wasn't a term of endearment, it was his first name, and he was just always too embarrassed to tell anyone.