cast a new Dr who to replace Christopher Eccleston be never go to be easy for the BBC and Russell t Davies . Eccleston have make the role he own and he untimely departure have frankly put the successfully revive show into jeopardy . fortunately , along come David Tennant who get into the role with relish . it be pointless try to compare Eccleston and Tennant against each other because both have such very different approach to play the doctor . Tennant retain some of the intensity that Eccleston bring to the screen but he doctor be more relax and lay back . indeed , he be full of the eccentricity that previous doctor bring to the character . just like the first series , the second series be a delightful collection of episode , some be naturally better than other but this be normally the case in any tv series generally . episode to watch out for be Tooth and Claw where Tennant and Rose -lrb- again superbly play by Billie Piper -rrb- have to protect Queen Victoria from a werewolf , the age of steel and rise of the Cybermen have a superb reincarnation of one of the Doctor 's greatest foe -lrb- even if the plot could have be better -rrb- , the Satan pit and inmpossible planet two parter , and School Reunion which see the return of k9 and Sarah Jane Smith . however , the real cream of the series come down to three episode : the Girl in the fireplace which be a superbly realize love story as the doctor battle to save Madame Pompadour from the clutch of a sentient spaceship and clockwork android ... Army of Ghosts and Doomsday see the return of the Cybermen when they invade the Earth in they million , and the Torchwood center be show in detail for the first time . Into this mix , however , then come the doctor 's most dreaded foe - the Daleks ... anyone who enjoy the first series will get they money 's worth out of this . Tennant have turn out to be a superb doctor and Billie Piper again excel as Rose , he assistant . sadly though , this be Rose 's last series and David Tennant will have a new assistant for the currently film Series three . that say , Billie Piper have indicate though that she would like to return to the role but in the newly create Dr who spin off - torchwood which feature Captain Jack from the first series , again play by John Barrymore . hat off to Russell T. Davies have again do a superb job with the script for this second series of Dr who . fan will be please to know that Russell be also script the raunchy Sci Fi spin off from Dr who - Torchwood , which on the strength of its first two episode look likely to be a winner too . fan of the series may be interested to know that Amazon . co. uk be release a limited edition pack of Doctor who - the complete Second Series in a three dimensional Cyberman head box , with other goody inside . this will be available from the 20.11.06 . be aware though that this be a region 2 dvd set and you will need a multi-region dvd player to be able to watch this . yet another dvd that justify upgrade to a multi-region player , if you do not yet have this facility ... -lrb- ... -rrb-