Allons-y! "Doctor Who" is undergoing yet another regeneration, as a new actor will soon step into the lead role. But this won't be quite like any of the series' past reinventions, as before ...

Allons-y! Over 60 years, Doctor Who has made the impossible seem normal by regenerating over and over again, like a Time Lord who doesn't want the adventure to stop. But, just like the TARDIS is ...