Leyland cypres is a good fast grower for quick vegetative screens. It is non-invasive and a well behaved member of the ornamental tree community.

It is susceptible to some kind of borer or another in the southeast US, but I've never had a problem with it (in the southeast US). If you like the way it looks, or if it makes an adequate background planting for you, it's a good tree. It won't last forever, but any Leyland cypress I plant that does not become diseased will probably outlive me, at this point in my life.

Personally, I can take it or leave it based on looks, but I've used it at two different homes I've owned to screen out nosy neighbors, and will use it again.

When fascism comes to America, it will be wrapped in the flag and carrying the cross."
--S. Lewis