Here is an illustration I did in, I think, 2009 of Tithonia Torch Sunflower:
According to gardeningcentral.org they are also unique in that they will bloom twice in one summer. Of course, I imagine this is true only if your summers are long enough. The website says. "If you plant it in March or April it will grow and produce beautiful
flowers into June. The blooms will then fall off and germinate. You
can then expect more blooms by October."