40% off Pragmatic Programmers books and screencasts.

Most of their language books are pretty good -- Programming Erlang and Programming Clojure are both worth reading, if you're interested in either language.

It's disappointing that they don't discount The Pragmatic Programmer, as that's a book I wholeheartedly recommend to every working developer. I think that's still owned by Addison Wesley.

Another vote for programming clojure if you are interested in it. I also have Prag Thinking and Learning and the book on web GIS but have not had time to read those (was from their black friday deal last year).

The RSpec book. It's not done, but it's pretty good. Cucumber/RSpec helps you think.

Yes they get 40% less and no they don't have any say, that being said 40% off at pragprog is probably still more money to the authors then the 40% + cut that Amazon or other retailers take.