Salted caramel or chocolate.
Peanut brittle (with or without bacon).
Yogurt (or chocolate) covered pretzels.
Those are pretty much tried and true sweet-savory combos. Maybe throw in a few others like honey-balsamic vinegar or chocolate potato chip cookies, etc.
But have you discovered or "invented" anything new recently?
Recently, I found that a Chocolate-Hoisin Sauce was a superb accompaniment for banana fritters as well as for crepes.
It's got that tangy, sweet, bitter taste sensation that I have yet find in anything except for maybe in really really ripe Durian -- except this sauce doesn't reek of week-old soiled diapers.
Just take equal parts Hoisin sauce and melted dark chocolate, and mix. Voila!
What about you? Any new sweet-savory combos you've discovered that you'd like to share?