Yet another Cyber Monday email, this one from O'Reilly:
Save 50% on All Ebooks & Videos
Save 60% on orders greater than $100
Use discount code CYBERDAY – Deal expires November 26, 2012 at 11:59pm PT, and cannot be combined with other offers. Offer does not apply to Print, or "Print & Ebook" bundle pricing.
http://shop.oreilly.com/category/deals/cyber-monday.do