Red valerian, Centranthus ruber, is just starting to flower.
A low form of mullein, this is, I believe, a Verbascum 'Harkness Hybrids'
Candytuft, Iberis sempervirens, is favorite of mine for its evergreen foliage and intense flower power.
Also in bloom in my garden today: periwinkle, geranium, quince, snow-in-sumer, sedum, ajuga, honeysuckle, violet, spiderwort, pea shrub, veronica, allium. Hurrah for springtime flowers!