RIP. I think I was one of the last years to take this wonderful class. I guess it would have been in 2004 or 2005, since I took it as an elective (being an Econ major) on the strength of its reputation. It was hard but so interesting!
Since then MIT has switched its intro CS class to be python based. I suppose that makes a little more practical sense but there's something magical about Scheme that I fear they're missing out on.