I've had sour cream turn bad, Chubbs, but only once. It usually gets moldy long before any of those other indications appear.
I usually pay scant attention to expiration dates, because they are arbitrary at best. But when mold starts to appear on dairy products, you know it's past time to replace them.
Blue cheese doesn't hang around here long enough to turn. But I know it can happen. Did have a piece of Stilton that got lost in the back of the fridge, once, and you don't want to know what it looked like.
Any cheese can spoil, particularly if it's kept in plastic wrap or zipper bags. But it let's you know by a distinct color change (usually a yellowish--ocreish--tannish something) and, often, by a slimey surface.