When Starman wears "his" old cap from the film, Jenny (not knowing who he really is) becomes upset. It's a touching, sad moment.
The comic book
Ted Knight's death and even worse, funeral at the end of the '90s Starman run. There's just something about seeing those characters walk up and say their piece that had this troper needing to put the comic down for a few minutes.
Jack's visit to Krypton, where he encounters a very young Jor-El is this both in-universe and for the reader, because Jack and the reader both know that Krypton is doomed.