There's been threads here before about players who scored on their first NHL shift (i.e. Lemieux, Mogilny), but how many players have scored on their last shift?
The only one I'm sure about is Bill Barilko. Scored in OT to win the Cup in 1951, then died that summer.
I thought Pierre Mondou might qualify, as he scored on the play where Samuelsson caught him in the eye with his stick, but it turns out that he did try to return to the lineup for a few playoff games later that season before deciding to retire.