Please nominate a perennial that blooms all season or most of it. Please make this from personal experience which would include observation of friends/neighbors/area plants.
Excluded from consideration:
All tropicals unless rated hardy to Zone 7
All salvias (sages)
All cupheas (those roly-poly little bat faced girls)
All echinaceas (coneflowers)
All monardas (bee balms)
All hemerocallis (daylilies)
I can't wait to see the nominees!