resident-vamp:

Doctor: Sonic blaster, 51st century, weapon factories at Villenguard?
Jack: You’ve been to the factories?
Doctor: Once.
Jack: Well, they’re gone now, destroyed. Main reactor went critical, vaporized the lot.
Doctor: Like I said, once. There’s a banana grove there now. I like banana’s, banana’s are good.

1x10 - The Doctor Dances