- Adaptation Displacement: Even the 1943 film is overshadowed by the TV series, let alone Eric Knight's original novel. The popular image of Lassie is a Heroic Dog saving people in trouble, though the novel was not about that at all.
- "Common Knowledge": For all of the other trouble he got into, Timmy never did fall down a well.
- Hilarious in Hindsight: In the 2005 film, Rowlie, who's played by Peter Dinklage, would remark a couple times how "winter is coming." Those would be the Arc Words for a show he would begin starring in six years later.
- Memetic Mutation: See above.
YMMV / Lassie