I experimented with this last weekend. It got rave reviews.

1 bottle Stubbs Original BBQ sauce
1/2 bottle Buffalo Wild Wings Mango Habanero Wing sauce
1/4 cup brown sugar
1/2 lime (squeezed)

place everything in a sauce pan and bring to a boil on medium heat (stiring frequently) Let cool and enjoy. This was great on smoked ribs, or try it on pulled pork. It is spicy so add less wing sauce if you like less heat.