And you thought the Comic-Con appearance of actress Jodie Whittaker, the first female Doctor Who, couldn't be topped? Then you know nothing about wibbly-wobbly timey-wimey.
Fans at the London Film and Comic-Con convention were treated to not one but nine Doctors Who over the weekend.
But the crowd went into meltdown when two of the most popular - actors Christopher Eccleston and Matt Smith - unexpectedly crossed paths.
The meeting is significant because Eccleston, who played the ninth Doctor and the first of the Doctors in the series reboot in 2005, was making his first ever convention appearance.
While it is uncertain whether the meeting was secretly planned by headline-hungry organisers, it seemed on the surface to be pure chance.
The two Doctors Who, and their respective entourages, were both crossing the convention floor and, when each realised who the other was, they stopped for a hug.
A crowd of fans quickly formed around the meeting.
In fact, a total of nine Doctors Who were in attendance at London Film and Comic-Con.
They were Tom Baker, Peter Davison, Colin Baker, Paul McGann, Eccleston, David Tennant, Smith, Peter Capaldi and David Bradley.
With such a concentration of Time Lords in attendance, it's any wonder the fabric of space and time did not bend, if not actually break.
After running into Smith, Eccleston then ran into Capaldi, and shared another Doctor-to-Doctor moment which was captured on video.
And of course, just to round out proceedings, Capaldi was later captured in an embrace with Colin Baker.
Doctor Who has one of the more complex continuities in fandom: the series follows a time-traveller who has the power of regeneration, discarding one body for another when it becomes exhausted or fatally injured.
Since the series premiere in 1963 there have been 13 official "Doctors Who", though several more actors have played the part in different situations and storylines.
London Film and Comic-Con is held annually at the Olympia exhibition centre in London.