For a truly unique, low-growing Azalea, try the culitvar 'Banshin'. I am drawn to this Satsuki-type Azalea because of the layering growth habit and dark green (think Charleston green) leaves. Even when not in bloom, this plant would hold its own in the garden. (Click on the picture above to see the the detail of these plants)
The large late-spring flowers are white with sections of deep pink that contrast nicely with the rich foliage. Growing only 2-3 feet high, this plant would be ideal in borders along brick walks or around of the base of a blue-foliaged evergreen like Deodar Cedar (Cedrus deodara).
The only nursery I know that grows this cultivar is Fair View Nursery in Wilson North Carolina. I scouted it yesterday- each plant is perfect and has excellent roots. Azalea 'Banshin' is garden-worthy.