Sing Me a Song!

[ladychi]

Prompt away, folks. It's open mic night at Chez Chi, so give me:

A fandom
A pairing
A prompt

(I'm curious to try my hand at Penny/Sheldon, I'm comfortable with: Booth/Brennan, Tony/Ziva, Kenshin/Kaoru and Harry/Ginny)

EDIT: And Doctor/Rose. How could I forget my OTP?? Jeez.

GO!