Gridlock, The Face of Boe

Gridlock the third episode of Doctor Who, was on last night and it was really good!. Gosh each week comes round really fast!.Well in this episode The Doctor and Martha revisited New, New York, Where The Doctor also saw the cat nurse once more because she carried news for The Doctor, she had to tell him of how The face of Boe was dying, so she zapped him to the hospital where he was. Well The Doctor was also trying to find Martha, who he had lost earlier on, also while trying to save all the other people who where trapped down below the Earth with some massive crabs, so The Doctor powers up some computers to open the shutter to let them all out into New, New York above, however they break down and he don't know what to do until, The Face of Boe sacrifices himself and plugs himself up to the computer to help The Doctor succeed in his task. Sadly The Face of Boe dies while helping The Doctor save the day, which was rather sad. But in that episode we finally heard his last words to The Doctor which where "Your not alone". I have my own thoughts on what this may mean ; which i will post up in a few days.