I watched it late, and while it didn't make me cry, it did make me uncomfortable. I hope the new guy doesn't try to continue Smith's frenetic energy...that was his trademark. Seeing Smith so slow and even infirm at the end...well, that was painful.
One slightly annoying bit, and that was that near-supernatural intervention that gave him one more regeneration. I'd thought we were through with limiting the number of regenerations allowed, once we passed the original cat-like nine lives. Obviously no one ever thought the show would run this long. It would be better if they just forgot about the limitations rule ahd had him regenerate whenever there's a cast change.