Though it's not really a quote, one of my favorite parts is the following:
Kermit breaks up a fight between Gonzo and the Christmas Turkey when the frog hears the sound of carollers coming. All of a sudden you see and hear the Sesame Street cast marching down the sloping hills singing their harts out, before reaching the large bay window and then entering Ma Bear's house.
Another quote I fondly remember is Robin: "Here, Grover, I want to give you this Fraggle pebble."
Grover: "Thank you Robin, I'll always love this cute little Fraggle pebble."
That's all for now, and happy holidays to all!