Doctor Who catch-up

In the midst of end-of-the-year on-line exchanges of fanworks (and, you know, actual off-line holidays), I finally caught up on the Doctor Who specials. Spoilers follow:

( Waters of Mars )

( End of Time, part 1 )

I know I won't be able to see part 2 for a few days afterwards, but I fully intend on using these bingo cards when I do. (Small spoilers, but mostly educated guesses.)