-Church course at St. Enodoc: feels like it is heading towards "properly rated" territory, but I believe it should be higher in the various rankings. It's a perfect blend of pure/classic links holes on an Open-rota scale/style (#1-2, #7-8, #16-18) with an unforgettable buffet of quirky/fun/strategic holes (#3-4, #6, #10, #14-15) that will take you across a road, over a stone wall and the corner of a dairy farm, up to a centuries-old church and graveyard, and past one of the most iconic bunkers/dunes in world golf.
I'll also second the nomination of Crail Balcomie.