One of the best plants for shade that also attracts hummingbirds is 
the perennial Indian Pink,
Spigelia marilandica.

It has tubular red flowers and spreads nicely but not invasively. My 
most successful plants
have come from the U of D plant sale. The nursery Marcia recommended, 
which sounds
very nice, does not seem to carry it. I ordered some via mail order 
last year but they did
not come up this year.

For a photo, see:

http://www.rubythroat.org/PinkIndianMain.html

--Pat

Pat Valdata, Elkton, MD | 
"The natural function of the wing is to soar upwards
and carry that which is heavy up to the place where dwells the race of gods.
More than any other thing that pertains to the body
it partakes of the nature of the divine." --Plato