The janitor’s antics (does he have a name?) were setup for JD to get into the changing room, and then again for Dr. Uh, Chief Guy to laugh at him, which illustrated one of his narrative points. It was silly, but it worked.
When that piece of utter dreck which is Friends is gone, and Scrubs leads out the top-rated night of TV for NBC, I shall do a dance of bliss and joy.
When they first showed the guy with the guitar sitting on the bench, I thought, “Hmmm, why does he look so familiar?” When he started singing, I recognized him and burst out laughing. Good version of the song, and overall good episode. I have to go look for my old Men at Work tape now.