Following Tennant's announcement last week that he was quitting his role as 'Doctor Who' on the hit BBC show, Brand Republic asked people who they thought would be the best replacement.
Opinions were mixed, with Paterson Joseph, John Simm, David Morrisey and James Nesbitt all receiving a similar number of votes from the public.
Most of the people questioned agreed that the new 'Doctor Who' needed to have comedic flair -- so Eddie Izzard, Danny Dyer and Mr Bean, the character played by Rowan Atkinson, were flagged as possibilities for their humourous touch.
Paddy Power has placed Paterson Joseph, who has appeared in 'Peep Show' and 'Green Wing', as the favourite to take on the role.
Joseph, who has already appeared in a number of 'Doctor Who' episodes, playing Roderick, would be the first black Doctor -- an appointment that could chime strongly with some following the victory of Lewis Hamilton on the F1 circuit and Barack Obama on the campaign trail.
Tennant, who took over the role from Christopher Eccleston in the 2005 Christmas special, has scooped an array of awards for his performances in the BBC show and won affection from the viewing public.
He was the 10th actor to star as the Doctor since the programme made its TV debut back in 1963. Others who have made the role their own include John Pertwee, Peter Davidson and Tom Baker, who competes with Tennant in the hearts of the public for the accolade of most popular Doctor ever.
Before he departs, Tennant will appear in the BBC Christmas special this year, four specials in 2009 and a final special edition in which his character will regenerate into a new Doctor.