This is a short but fascinating video (if you're a building contractor, employer, or a total geek) by Stephen Dubner - co-author of "Freakonomics", - which will be on the NYT bestseller list again this Christmas when it comes out in paperback.
If an employer can be sued by a disabled employee for not being 100% in compliance with the Americans With Disabilities Act, does this make the employer more likely or less likely to hire Americans With Disabilities?
Video: Is the Law of Unintended Consequences the Strongest Law Around? - Freakonomics - Opinion - New York Times Blog
(I'm making an assumption here that the book will be in paperback by Christmas. If those guys are smart enough to write a book this good, they're smart enough to know when to release the paperback....)