Here's a few more…
By the way, if anyone would like an image "bookifying" then feel free to email it to me:
Stephen Abram (stephenslighthouse.sirsidynix.com)
(largest version – 3,420 book covers)
Sarah Houghton-Jan (librarianinblack.typepad.com)
(largest version – 4,680 book covers)
Casey Bisson (www.maisonbisson.com)
(largest version – 2,700 book covers)
Meredith Farkas (meredith.wolfwater.com)
(largest version – 3,000 book covers)
John Blyberg (www.blyberg.net)
(largest version – 4,080 book covers)
Jessamyn West (www.librarian.net)
(largest version – 2,040 book covers)
(largest version – 3,480 book covers)
Michael Casey (www.librarycrunch.com)
(largest version – 2,940 book covers)
note: the largest versions are hosted on my home PC, so you'll probably have time to make a cup of coffee, run a bath, and rearrange your entire library stock by the colour of the spines before they finish downloading 
Wow.
Cool!!!!