Herbaceous perennials is my middle name
They are my favorite kind of plants - plant them once, and forget about it (except for some occasional splitting). I also like the fact that since they die back every winter, they tend to not get too big and over-yielding.
My hellebores are all finished blooming, but the green leaves continue to provide foliage interest.
Silene diocia has been blooming for about 3 weeks
Euphorbia - I have posted this before, but it is a great perennial and is worth a second look (remember to dead head)