They've all played 'versions' of the Doctor in Doctor Who:
Jayston plays the Valeyard, a court prosecutor, in The Trial of a Time Lord. The name means "doctor of law" and it's revealed that the character is a manifestation of the Doctor's dark side.
In Amy's Choice Toby Jones's Dream Lord is a similar character, embodying the Doctor's negative thoughts.
in The Next Doctor, David Morrissey's Jackson Lake is not in fact the Doctor, but believes he is after his mind is flooded with the Doctor's memories. When the Doctor meets him he is (at first) convinced that he's talking to one of his future incarnations.
They've all played 'versions' of the Doctor in Doctor Who:
Jayston plays the Valeyard, a court prosecutor, in The Trial of a Time Lord. The name means "doctor of law" and it's revealed that the character is a manifestation of the Doctor's dark side.
In Amy's Choice Toby Jones's Dream Lord is a similar character, embodying the Doctor's negative thoughts.
in The Next Doctor, David Morrissey's Jackson Lake is not in fact the Doctor, but believes he is after his mind is flooded with the Doctor's memories. When the Doctor meets him he is (at first) convinced that he's talking to one of his future incarnations.
Without looking at the spoiler. Why post it? All played in Dr Who.