the return of Dr. who be the most exciting thing that have happen to Science Fiction TV since Star Trek The Next Generation premiere -- and much less disappointing . David Tennant be a funny , versatile , sexy doctor . although I miss the edginess of Christopher Eccleston , Tennant be terrific -- immediately likable . he be like a doctor with add , sometimes almost manic in he characterization , sometimes sad , very emotional , but always with a very firm set of internal guideline and invincibility . this doctor have accept who he be , have come to term with the life of a Time Lord , and more than anything let you see how alien he really be . this season have some of the saddest episode I can recall - three real tear jerker , and for the first time we actually get to see the doctor in a potentially romantic capacity . I love he delight in explore the universe -- when confront with a huge , menacing werewolf he first reaction be , `` beautiful ! '' Billie Piper as Rose be a good counterpart to this as they both frequently get catch up in the fun of travel -- yes they be face horrible villain and have to save the world on a episodic basis but they be also just plain have fun . it be a delight to see Elizabeth Sladen back as Sarah Jane Smith and also to see k-9 back . although I be not completely happy with the bitter portrayal of Sarah Jane , I can see what the writer be do and can see that it make sense in light of the story . I do wish the series have not spend so much time with Rose 's family . more than half of the episode center on Rose , she mother , she father and Mickey and it be , frankly , tiresome . companion be not suppose to have baggage ! I realize that the writer be try to explore this aspect of the show because it have never really be do before however that be always be part of the charm of Dr. who -- the thought that he can pick up a companion , take they out of time and space with no thought for whomever they might leave behind . that be a minor quibble , however . Dr. who rock ! Dr. who rule ! long live Dr. who !