Little Lisp interpreter
If you find that interesting, you should probably take a look at this:<p><a href="http://michaux.ca/articles/scheme-from-scratch-introduction" rel="nofollow">http://michaux.ca/articles/scheme-from-scratch-introduction</a><p>I had fun following along with him.  Now, if he (or I can get my shot at it finished) can ever finish working on the byte-code based version!