Daleks: [simultaneously] Exterminate! Exterminate!
[They fire their weapons, none of which so much as touch the Doctor]
The Doctor: Is that it? Useless! Nul points! [to Rose and Jack] It's all right, you can come out; that forcefield can hold back anything!
Jack Harkness: Almost anything. [pause]
The Doctor: Yes, but I wasn't going to tell them that. Thanks.

Auteur: Russell T. Davies