Happy Days/Heartwarming


 * "Welcome Home, Part 1" is full of moments like this, as Richie and Ralph come home from their stint in the army. One notable moment is in which Richie, Fonzie, Potsie and Ralph sit at their usual booth at Arnold's. (This would also be the last scene in which all four characters appear together.)
 * Richie jumps into frame and immediately the audience begins screaming and cheering - this goes on for minutes on end as he hugs every member of his family.
 * The episode "Richie Almost Dies" is this, especially the scene with Fonzie making a deal with God ("You do this for me... And I'll owe you one.") at Richie's bedside, before completely breaking down in tears. There's a meta element to it, as well: The entire reason the episode was made was that the producer had received a letter from counselors who were having trouble with abused children. The kids wouldn't express their emotions - they didn't want to cry. They all loved Fonzie for being so tough, and the counselors thought that seeing him cry might help them to realize that it was an okay thing to do. The fact that a popular tv show cared enough to respond to this sort of request in such a big way is quite touching, no matter what you might think of the episode itself.
 * Joanie and Chachi announce their engagement. Howard, the father of the bride, walks up menacingly to Chachi- "Chachi, I'm going to say something, and I'm only going to say it once: I like you. Welcome to the family." and holds out his hand. Also, when they tie the knot in the Grand Finale, when Howard thanks the audience for being with his family through all these years, and says "to Happy Days."