I just want to review stuff. It never hurts to go back to the basics and refresh things. I like to have a solid base on Data Structures, Algorithms and Probability. I even sign up for under graduate online courses if and when possible. Udacity makes my job quite simple.
Commented on this above, but the best favor I ever did myself in terms of online learning was to watch Gilbert Strang's (MIT) linear algebra lectures from iTunes U.
