I know a lot of people aren't keen on this story (I went back and read some of the comments scattered throughout various threads), but having finally gotten the chance to read this myself, I have to say I thoroughly enjoyed it. Is it mostly fluff and full of fanwank? Perhaps, but at the same time I think it's a wonderful celebration and tribute to all of Doctor Who.
I saw one post comparing this story to TNG's "Shades of Grey" and I have to say I completely disagree with that comparison. "Shades of Gray" was a clip show of material previously aired, but The Forgotten's vignettes not only show us events we've never seen before, but those sequences play important roles within the overall story. Yes, there isn't much to the actual story than The Doctor being trapped and tantalized by a myserious villain, but I wasn't really expecting something very deep with this story. Instead, this was a fun story for not just The Tenth Doctor but for all of the previous Doctors. Better yet, we got to see each Doctor in a situation that best represents them: The First in a true historical, The Second in a space adventure, The Third in a wild U.N.I.T. escapade (and Jo actually using her brain!), and so on. Additionally, we get some nice hints to the Time War and an amusing explanation to the whole "half-human" business. The Ninth Doctor's vignette was probably the most touching, reminding me of the climax of "The Doctor Dances" ("Everybody lives, Rose! Just this once! Everybody lives!").
I love the revelation that "Martha" was in fact the TARDIS , who is indeed The Doctor's most faithful companion (although I admit I failed to see the reason why the TARDIS chose to pick Martha in particular). I also loved the brief glimpses of various other companions, including those who don't often get much love or recognition like Steven, Harry, Mel, Kamelion, or Adric. I wish we could have seen all of them, but I know that would have been a bit heavy handed even for this story. At least some of them got verbal mentions (such as Ben, Polly, and Dodo). All in all, I think every companion got some kind of reference except Vicki, Katarina, Sara, Victoria, Liz, and K-9.
I much preferred the villain turning out to be a character we had never seen before, as oppose to the Meta-Crisis Doctor gone bad or The Valeyard (as I thought was the case based on some spoilers I accidentally encountered before reading).
Incidentally, while I was reading this, I had an enormous brain fart in regards to the publication date. The graphic novel came out in April 2009 and for some reason I thought this was prior to series 4 (which made it easier for me to accept why Martha was the companion of choice early on) so I was pleasantly surprised when more and more series 4 references popped up. Sometimes it pays to have a faulty memory (well, maybe not for The Doctor).
In the end, I thought The Forgotten was wonderful but I can understand why it's not being for everyone. That being said, however, I wonder if I enjoyed it more because I read it in two sittings over two days as oppose to six sittings over six months? I noticed this can make a difference sometimes (particularly with shows like LOST and Battlestar Galactica). Have those who didn't like the story originally gone back and re-read it all at once as a whole?
I saw one post comparing this story to TNG's "Shades of Grey" and I have to say I completely disagree with that comparison. "Shades of Gray" was a clip show of material previously aired, but The Forgotten's vignettes not only show us events we've never seen before, but those sequences play important roles within the overall story. Yes, there isn't much to the actual story than The Doctor being trapped and tantalized by a myserious villain, but I wasn't really expecting something very deep with this story. Instead, this was a fun story for not just The Tenth Doctor but for all of the previous Doctors. Better yet, we got to see each Doctor in a situation that best represents them: The First in a true historical, The Second in a space adventure, The Third in a wild U.N.I.T. escapade (and Jo actually using her brain!), and so on. Additionally, we get some nice hints to the Time War and an amusing explanation to the whole "half-human" business. The Ninth Doctor's vignette was probably the most touching, reminding me of the climax of "The Doctor Dances" ("Everybody lives, Rose! Just this once! Everybody lives!").
I love the revelation that "Martha" was in fact the TARDIS , who is indeed The Doctor's most faithful companion (although I admit I failed to see the reason why the TARDIS chose to pick Martha in particular). I also loved the brief glimpses of various other companions, including those who don't often get much love or recognition like Steven, Harry, Mel, Kamelion, or Adric. I wish we could have seen all of them, but I know that would have been a bit heavy handed even for this story. At least some of them got verbal mentions (such as Ben, Polly, and Dodo). All in all, I think every companion got some kind of reference except Vicki, Katarina, Sara, Victoria, Liz, and K-9.
I much preferred the villain turning out to be a character we had never seen before, as oppose to the Meta-Crisis Doctor gone bad or The Valeyard (as I thought was the case based on some spoilers I accidentally encountered before reading).
Incidentally, while I was reading this, I had an enormous brain fart in regards to the publication date. The graphic novel came out in April 2009 and for some reason I thought this was prior to series 4 (which made it easier for me to accept why Martha was the companion of choice early on) so I was pleasantly surprised when more and more series 4 references popped up. Sometimes it pays to have a faulty memory (well, maybe not for The Doctor).

In the end, I thought The Forgotten was wonderful but I can understand why it's not being for everyone. That being said, however, I wonder if I enjoyed it more because I read it in two sittings over two days as oppose to six sittings over six months? I noticed this can make a difference sometimes (particularly with shows like LOST and Battlestar Galactica). Have those who didn't like the story originally gone back and re-read it all at once as a whole?