I'm smitten with all the varieties of cuphea. Right now I have 4 different ones blooming, including the large shrubby one known as cigar flower (Cuphea ignea?) that the hummingbirds like. (Sorry, I don't know the names of the ones pictured below.) I lost the bright red/deep purple bat-faced cuphea this winter.
Smooth, bright green leaves with bat-face flowers:
Slightly fuzzy leaves with open flowers:
My favorite - darker leaves with larger, frilly flowers: