The entire series finale could be argued as one, but especially the speech made by Ivan before "Before You Know It".
Natasha: It's just a TV show!
Ivan: No, it's my family.
Natasha: They're not really your family.
Ivan: You're wrong. We've done a lot of shows together. People have come and gone, but the family stayed together. People have gotten sick, and we all pulled together until they got better, and when they didn't get better, we still pulled together and we were still a family.note It wasn't easy, but life went on.