For example, you first saw a particular non-Christmas movie on TV or in the theater around Christmas and now always associate it with that time of the year.
For me it's The Towering Inferno, first seen on TV on Christmas Eve many years ago and I've rewatched it a number of times since then (even bought the Blu-ray).
As an aside, it has quite a cast too: Steve McQueen, Paul Newman, Fred Astaire, William Holden, Faye Dunaway, Richard Chamberlain, O.J. Simpson .....
Ragsman33 t1_itg2r74 wrote
The Lord of the Rings movies all came out in theaters in December, so usually I want to do a marathon of those around that time.