One of the big gripes people have about the CSM (Certified Scrum Master) accreditation is that you can get your CSM simply by attending a 2 day training session. You could all but sleep through the course and still be certified.
Well, that's all about to change. I had a heads up on this earlier this year and all I could say then was "Hallelujah!". My feelings now are still the same. It's a long overdue improvement to the certification process to require proof of knowledge and understanding by people being certified.
The process itself will be fairly simple - a straight up multiple choice exam, but at least it ensures that people now have a minimum guaranteed level of understanding and that can only help improve the strength and integrity of the certification process overall. It's not a complete answer to the certification process but it's a step in the right direction, and that's what agile is all about :-)
InfoQ also has some thoughts on this at http://www.infoq.com/news/2008/11/scrum-certification-test