This is nice, ++.

One minor note: Under Unix if you don't require a specific perl binary or a specific script path and would like to have emacs just locate them in your PATH, just make them executable and add a shebang to them. You can then run them with a reduced version like this...

;; Wrap perl scripts with emacs
(defmacro perl-script (name
                       description
                       executable)
  `(defun ,name ()
     ,description
     (interactive)
     (let ((buf (generate-new-buffer ,(symbol-name name))))
       (shell-command ,executable buf)
       buf)))
[download]

... in order to get rid of the two path globals. This isn't much different than using M-x shell-command directly, but it does give you an easy way to use a unique buffer with a useful name.