Brief Candle is the episode from season one where Jack is infected with nanobots causing him to age rapidly. The episode has just finished and I'm just about rolling on the floor laughing in a very childish fashion. How ridiculous does Sam Carter (Amanda Tapping) sound when she says "without these little buggers in your system"?! The inflection is so in the wrong place and it's clear she's never used the word 'bugger' in her life before.
Makes me laugh anyway!