http://www.bricklink...tem.asp?P=32489 -core of 14 sets
http://www.bricklink...tem.asp?P=32482 -limb in 20 sets
http://www.bricklink.com/catalogItem.asp?P=32553
http://www.bricklink.com/catalogItem.asp?P=32554 -head and matching eye insert, used in ~40 sets
http://www.bricklink.com/catalogItem.asp?P=41672 -structural element, 18 sets
http://www.bricklink.com/catalogItem.asp?P=43557 -limb for 12 sets
http://www.bricklink.com/catalogItem.asp?P=43558 -armour, 14 sets
http://www.bricklink.com/catalogItem.asp?P=x345 -armour, ~25 sets
http://www.bricklink.com/catalogItem.asp?P=44135 -structural element, 16 sets
http://www.bricklink.com/catalogItem.asp?P=44136 -structural element, 13 sets
http://www.bricklink.com/catalogItem.asp?P=47332 -head, 10 sets
http://www.bricklink.com/catalogItem.asp?P=50904 -structural element, 10 sets
On a related tangent, Bionicle introduced ~40 parts per year, and almost all of the existing parts used are already in LDD.
http://www.brickshelf.com/gallery/Cagerrin/MOCs/Misc/ldd_2001_bionicle.jpg
http://www.brickshelf.com/gallery/Cagerrin/MOCs/Misc/ldd_2002_bionicle.jpg
http://www.brickshelf.com/gallery/Cagerrin/MOCs/Misc/ldd_2003_bionicle.jpg
http://www.brickshelf.com/gallery/Cagerrin/MOCs/Misc/ldd_2004_bionicle.jpg
http://www.brickshelf.com/gallery/Cagerrin/MOCs/Misc/ldd_2005_bionicle.jpg