Peter Skomoroch, Principal Data Scientist at LinkedIn has a very good advice for the aspiring Data Scientists.
"Learn Git, Python, Java, Hadoop, Pig. Really just immerse yourself in good software development practices and engineering rigor"
"... they need to learn a bit of statistics and machine learning as well"
Head over to Metamarkets for the complete interview.
Update on 05th April, 2015: After a fair bit of time here, I have moved on to GitHub hosted Octopress blogs. Please find me on http://P7h.org henceforth for all new updates.