I have a kind of narrow, but very long back yard with a privacy fence. There is a house right in back of me and I would very much like to block that view. I was wanting a variety of things, lots of green and a little punch of color here and there.
I forgot to mention that I am in Zone 6.

A flowering Snowpea is good for fullness, it also has small yellow flowers. Yew are also nice for privacy and can be shaped.