I have my heart set on loathing David Tenant as the new doctor after Christopher Eccleston 's departure in the final episode of the previous series . there be just no way that he could replace Eccleston ! no way ! I be prove wrong a thousand time over . Tennant become more and more of a pleasure throughout Series 2 and then 3 and 4 . the team , Billie Piper as Rose and Tennant as the Doctor , in this second series be a incredible , unstoppable combination . do the special effect get better or do I finally learn to look past they and see the rich depth the show offer in spite of they ?