Going with Joe's (favourite included) for Facebook, a bit different for Twitter. 

Twitter:

Doctor Who premiered on British TV on 11/23/1963 (with this logo). Congrats @DoctorWho_BBCA https://en.wikipedia.org/wiki/An_Unearthly_Child 

Facebook: 

Doctor Who made its debut on British television on this day in 1963. Who's your favourite Doctor? https://en.wikipedia.org/wiki/An_Unearthly_Child 

What thinks? 

Jeff Elder
Digital communications manager
Wikimedia Foundation
704-650-4130 
@jeffelder
@wikipedia
The Wikimedia blog

On Sun, Nov 22, 2015 at 5:21 PM, James Alexander <jalexander@wikimedia.org> wrote:
On Sun, Nov 22, 2015 at 5:10 PM, Joe Sutherland <jsutherland@wikimedia.org> wrote:
It's also the anniversary of the first-ever episode of Doctor Who...

• Doctor Who made its debut on British television on this day in 1963. Who's your favourite Doctor?

I used to believe this was ripe for arguments... I still have those arguments but now I've just decided it's a very mean question to ask a fan because it causes so much internal strife (that said it's also why it's a perfect question to ask because it gets them going ;) so I recommend it)
 
If we're doing this we should definitely tag their social accounts as well, they've got a pretty on-the-button social media team if memory serves...

YES!!!! They even replied to our year in review youtube video last year :D [I say as I remember I think it was you who found that/at least told me about it]
 
Random factoid, it was marred by JFK's assassination the previous day. Thankfully, a certain nemesis's introduction in the next episode made up for that.

The Daleks <s>fix</s> destroy everything, but the Master is the better nemesis <sets up fan fight>

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