I'm sure the Lisp machines were very impressive compared to a DOS or Unix prompt, but today I can run like ten Amber or Newspeak environments on a constantly networked many-core system I carry around in my pocket. I'm not sure whether the CL folks have created similar web interfaces to the running image but I wouldn't be surprised if they have.

I feel it would be cool to sometime run code on a radiation hardened Forth chip, or some obscure Lisp hardware, but would it be life changing? I doubt it.