I have two flowering shrubs that were here when I moved in and I have no idea what they are.
The first one is about 5-6 feet tall and blooms in Spring. This photo was taken as the blooms were dying away. The branches are like giant hairs that grow up and out of the base and then hang down a little.
The second one just started blooming recently (beginning of June). This one only has a few flowers, but I think that's because it was cut back quite a bit last year. It is cut small in a ball-like shape about 3 feet in diameter, but was much larger before.