The View from Halfway Down

The song that Crackerjack plays for his and Beatrice's stage show, is "I Will Always Think of You," which debuted in The Old Sugarman Place (2017), when he played the song on the piano with their mother, Honey Sugarman.

Footmen and maids properly clear plates from the right (and serve from the left), so Zach Braff is, in fact, conducting himself properly while serving at the table despite Bojack's complaint.

SPOILER: The sound of a flatlining heart monitor is heard during the closing credits, which eventually beeps normally by the end.