18x12: Rejoice! A Christmas Special
18x04: Restaurants
18x09: Radioactive
18x10: Rest and Recreation
18x06: Ridiculous
18x07: Revolutions
18x08: Reflections
18x03: Road and Rail
18x02: Ruff and Reddy
17x16: Quads and Quins
17x15: Quantity and Quality
17x07: Quests: Part II
