SICP Progress

How far has everyone gotten with SICP? I'm on the last boss, but I've run out of medikits.

In all seriousness, though. How many of you actually do the exercises? How far have you gotten?

>>4
I've been here longer than you, shaped more of the culture than you, was in fact the first to notice a distinctly /pr/uney smell about certain posters, so I suggest that it is you who should leave.

I should also mention that I used to do the exercises in my motorcycle book, not that >>4 has been here long enough to get the reference.