The way it is, this thread should not be stickied in my opinion, it's like kind of a wiki thing that anyone can submit levels to be listed, but which, by being stickied, is depicted as an official "featured levels" list, as a list that was generally agreed to, or as a list with levels that have the best ratings. Not everyone agrees that the levels listed in the OP are the best levels, and some levels just seem to have appeared on the list out of nowhere (or because one person mentioned them).
So, I suppose that means I'll unsticky this for now.