What do you think of Data Science certifications? I've now seen two data science certification programs - the John Hopkins one available at Coursera and the Cloudera one.

I'm sure there are others out there.

The John Hopkins set of classes is focused on R as a toolset, but covers a range of topics:


R Programming
cleaning and obtaining data
Data Analysis
Reproducible Research
Statistical Inference
Regression Models
Machine Learning
Developing Data Products
And what looks to be a Project based completion task similar to Cloudera's Data Science Challenge


The Cloudera program looks thin on the surface, but looks to answer the two important questions - "Do you know the tools", "Can you apply the tools in the real world".  Their program consists of:


Introduction to Data Science
Data Science Essentials Exam
Data Science Challenge (a real world data science project scenario)


I am not looking for a recommendation on a program or a quality comparison.

I am curious about other certifications out there, the topics they cover, and how seriously DS certifications are viewed at this point by the community.

EDIT: These are all great answers.  I'm choosing the correct answer by votes.
As a former analytics manager and a current lead data scientist, I am very leery of the need for data science certificates.  The term data scientist is pretty vague and the field of data science is in it's infancy.  A certificates implies some sort of uniform standard which is just lacking in data science, it is still very much the wild west. 

While a certificate is probably not going to hurt you, I think your time would be better spent developing the experience to know when to use a certain approach, and depth of understanding to be able to explain that approach to a non-technical audience.