I'm really enjoying SICP and Scheme. I find them quite enriching. To quote the The Little Schemer: "Does your hat still fit? Perhaps not after such a mind stretcher."
If you'd like to see my answers, along with a bit of commentary and observations, please visit my SICP solutions github project.
My website is christian.delahousse.ca
portrait:http://en.gravatar.com/userimage/8955657/521b7bb0b23ff24ed8cb386f1af993b9.png