'Doctor Who' star David Tennant said he and former 'James Bond' actor Timothy Dalton showed their mutual respect by breaking into a singsong of each other’s theme tunes.
Dashing Dalton, who starred as 007 in films 'The Living Daylights' and 'Licence To Kill', will play The Narrator in the Doctor’s adventures over Christmas, as he makes his final journey.
Full details of Dalton’s character are being kept under wraps, but there has been speculation that he will be a “baddie”.
Praising Dalton’s down-to-earth attitude to the Radio Times, Tennant said: “He was lovely.”
He continued: “He had the panache and the skill of a movie star, without any of the alarming eccentricities or peculiar demands.
“At one point, he was singing the 'Doctor Who' theme tune to me as I sang the James Bond theme tune to him!”
The grand finale, titled 'The End Of Time', will be shown in two parts and see Tennant bow out as the 10th Doctor, before regenerating into actor Matt Smith.
The episodes will see the Doctor’s psychotic nemesis the Master, played by 'Life On Mars' actor John Simm, re-born.
Bernard Cribbins, Catherine Tate and June Whitfield will also make appearances.
Writer Russell T Davies was not daunted by having killed off the Master in 2007.
He told the Radio Times: “It’s personal for the Doctor. The Master is his enemy, his opposite, and yet so tantalisingly close to being his soul mate.
“There’s something epic about their sheer existence – the last two survivors of an ancient race. It’s a clash of the titans.
“Both of them heading for death, and yet both determined to survive – at any cost!”
Simm described his character’s latest incarnation as “emo Master”, with the character’s sharp suit replaced by a punky hairdo.
“This is a Master who’s lived and died,” Simm told the magazine, “and now lives again – although he’s seen healthier days. He’s desperate, and desperate means dangerous.”
:: The full interview appears in the latest issue of the Radio Times.