Super-duper-natural Viewing List
Season 1 – Episodes 1, 22
Season 2 – Episodes 1, 15, 20, 21, 22
Season 3 – Episodes 3, 11, 16
Season 4 – Episodes 1, 3, 6, 18, 20, 22
Season 5 – Episodes 1, 2, 4, 5, 8 ,9, 13, 16, 18, 22
Season 6 – Episodes 4, 11, 15, 20, 22
Season 7 – Episodes 10, 17, 20, 21, 23
Season 8 – Episodes 11, 12, 14, 23
Season 9 – Episodes 1, 5, 9, 10, 11, 23
Season 10 – Episodes 3, 5, 11, 14, 22, 23
Season 11 – Episodes 1, 4, 20, 22, 23
Season 12 – Episodes 7, 12, 22, 23
Season 13 – Episodes 4, 5, 6, 10, 16, 23
Season 14 – Episodes 8, 10, 13, 17, 20
Season 15 – Episodes 1, 2, 7, 10, 13, 18, 19, 20