One of my favorites in the "interesting but not intellectually taxing" category is Vouvray, the dry, minerally white from the Loire Valley that's delicious when young but amazing with a few years' age, particularly made by great producers like Domaine Huet and Jacky Blot.
WSJ: Houseguest Wine: Yes to Albari?o, No to Malbec | On Wine by Lettie Teague