Really. I have the soundtrack to Why's Poignant Guide to Ruby, and now I'm dancing around the house to this. Of course one reason to learn Lisp is Impromptu, the live coding app developed by Andrew Sorensen for Mac OSx. He writes in Scheme, and the tutorials on his site are great. Lisp has got my attention for other reasons too. Expression is critical in modern multimedia coding, where applications are developed and practically thrown away. I really just need a language to build from point A to point B, with out developing a pile of supporting code.