As much as I love racket/scheme/lisp, I truly believe that the 61A (sans-s) where python is taught, helped me much more for my career/future just because it was taught in python. For programming fundamentals, either works great, but I think working with python is more helpful for future environments.
One example of this is when a classmate of mine was taking an artificial intelligence class at Berkeley (Cog Sci 131) and was at a loss because she was taking 61as which was taught in strictly scheme, and the artificial intelligence class was taught in strictly python.
Both classes are wonderful and I can proudly say that it has made me a better computer scientist. http://cs61a.org/
One example of this is when a classmate of mine was taking an artificial intelligence class at Berkeley (Cog Sci 131) and was at a loss because she was taking 61as which was taught in strictly scheme, and the artificial intelligence class was taught in strictly python.
Both classes are wonderful and I can proudly say that it has made me a better computer scientist. http://cs61a.org/