Another bald Blue Jay at the feeders the other day. Here's some facts from Cornell Lab of Ornithology about bald birds.
The Birdchick blog also recently had a post and cool pictures of bald cardinals.
UPDATE 2008: Mid-August 2008 brought another batch of bald Blue Jays to the feeders. Check out some new photos of bald jays in the Late Summer Yard Observations post.
UPDATE 2009: Here's a link to pictures of 2009's bald Blue Jays!
UPDATE 2012: Here's 2012 pictures entitled "Blue Jay Style".