I'm not your brother. I'm not Sam.
– Sam, 6.08 All Dogs Go to Heaven
"Not!Sam" is a term fans use to describe Sam in early Season 6 when he is saved from Lucifer's Cage without his soul. producers Sera Gamble, Bob Singer and Ben Edlund also use the term on the commentary tracks on the Season 6 DVD.
see also: RoboSam