I also love weeping willows, I grew up on a farm with several ponds and we had a lot of weeping willows. I also love cherry trees when they are in bloom. The blooming doesn't last long but they are beautiful when they are in bloom. I was stationed in the DC area for several months but I wasn't there when the cherry trees were in bloom.
It depends on the season! Some of the dogwoods are so pretty in the spring! But I love the fiery red of some maples varieties in the fall. Plus maple sugar candy.
My yard came with 3 mature silver maples. They are so nice for shade but not fall color. The way the trunks divide makes me a little nervous too. We planted 3 more maples a bit over a year ago. One is a red maple, one fire maple and another silver maple (they were all that was left when we went to pick out our trees). We also planted 2 red bud trees I was given at a home show.
I love weeping willows and can't have any in our yard because their roots seek out water and they would hit our septic bed. Not a good thing.
In the spring, I really love our weeping cherries, our redbud, and our dogwood....I'm so starved for color by that time, that I can't wait for the trees to bloom.
We had two gorgeous silver maples in our side yard. Sadly, we lost one to a lightning strike a few years ago and had to tear it out. The other one is about 30 years old now and we think it's just a matter of time now before we lose that one, too. Silver maples are beautiful trees, but they are fragile and not especially long-lived.
I have two favorite trees on our property. One is our black walnut that we planted as a twig about 30 years ago. It's now a gorgeous tree, loaded with walnuts and with the squirrels who take them (I don't like black walnuts at all, so the squirrels are more than welcome to them). It's the last tree to leaf out in the spring and the first to lose its leaves in the fall. They are already turning a beautiful golden color and dropping to the ground. The other is our mountain ash in the back yard. It, too, was planted about 30 years ago as a 12-inch high stick and became this gorgeous ash tree and shades our picnic table and our swing. It's lost many of its lower branches; as ashes do, it will eventually turn into this tall tree with branches at the top. Alas, the ash borer has made its way into central PA and we'll probably end up having to take our ash tree down, despite trying to spray it. But I dearly love those two trees.