Use

(load-file "epguide-scraper.el")
(retrieve-agenda-from-epguide-show 11215)

Test

(load-file "test-epguide-scraper.el")
(ert-run-tests-interactively)

In org mode

1. Add to an org agenda file

   * 30 Rock                                                           :30rock:
   (retrieve-agenda-from-epguide-show 11215)
       

2. Eval org agenda file

   (org-babel-execute-buffer)