So flare seems to be mostly a "problem" for you Bob, something to eradicate.

I am interested in controlling flare in this sense for a lot of my work, but I also want to see/learn how these techniques are used creatively.

For example,

Like using a short DOF or a swirly Petzval lens, flare in that particular shot from Matt Black, is a tool worthy of consideration for simplifying or adding mood to the composition.