BTW, sickest class ever. Most of the dev team at Dropbox took the course. It's a mindbender, plus you get to hang out with Gerry Sussman.<p>Pretty much every lecture is spent examining a different programming approach and demonstrating that it's either trivially implemented in Scheme, more elegantly implemented in Scheme, or actually not worth implementing in the first place.
There is no sequel to SICP. It's just a course, not a book. There was already sort of a sequel (<a href="http://mitpress.mit.edu/SICM/" rel="nofollow">http://mitpress.mit.edu/SICM/</a>), but it's far from new.