I'm a huge fan of capsicum products on potato latkes; cranapple chile salsa sounds awesome. I also like hot/sour mango chutney (Patak's), Brazilian garlic/coriander sauce, guasacaca sauce, zhoug, chile vinegar, coriander mint chutney, and the like. I read in a cookbook when I was young some comment about potatoes being the perfect ground for a condiment, and I've been experimenting ever since.

Mr. Fixer likes both sour cream and applesauce on his. I'll put up with sour cream from time to time, but applesauce is a side dish as far as I'm concerned.