Comment by lisper

Yes. In fact, I do almost all of my coding in Common Lisp. I'm even getting paid for some of it :-) I'm working part time for Intel helping them maintain an internal design tool written in CL. I run my own email server that runs a spam filter that I wrote in CL, and the e-commerce system that processes orders for my crypto dongle is written in CL. As an exercise I wrote a sudoku solver in CL a while back.