This is based on opinion. Please don't list it on a work's trope example list.
Tear Jerker / Henry IV Part 1
Falstaff's plea that the Prince not reject him once he be crowned.
"...But for sweet Jack Falstaff, kind Jack Falstaff, true Jack Falstaff, valiant Jack Falstaff, and therefore more valiant, being, as he is, old Jack Falstaff, banish not him thy Harry's company, banish not him thy Harry's company: banish plump Jack, and banish all the world." "I do. I will."
Prince Hal's eulogy for Hotspur. Yes, the Shakespeare fan who was never in danger of shedding a single tear at Prince Hamlet's death, Romeo's and Juliet's suicides, Desdemona's murder, or at all in King Lear wept buckets over this scene!