Anne of Green Gables by L.M. Montgomery (1908)

I love the Anne of Green Gables series, but I kind of really only love the first two and a half books.  I love orphan Anne and, of course, Marilla and Matthew, and all of her adventures with her bosom friend Diana.  And her flirtation with adorable Gilbert Blythe.  But once she married Gilbert (spoiler!), the series gets deadly dull for me.  Wonderfully filmed for Canadian television in the 80s.