Rating: All Ages
Word Count: 1286
Author's Summary: "So in 1982, the Doctor becomes, for a week, a chemistry teacher."
Characters/Pairings: Ace, Ten
Recced because: I love stories with criss-crossing timelines (very wibly-wimey timey-wimey, before Moffat made it cool), and Ace's interactions with Ten are spot-on. The Doctor is the same person with Ace that he was / will be, and this story is both painful and hopeful at the same time - just like the best of Doctor Who.