Dr. Cox tells Carla to translate something for Hector. It has been established that Dr. Cox can speak Spanish, therefore he could have told Hector.
When Elliot is talking with Dr. Kevin Casey over lunch, the
sandwich on Kevin's plate switches from having one toothpick on the plate and one in the sandwich to only having one on the plate between shots.
When Elliot and Dr. Kevin Casey are speaking during lunch, Kevin's sandwich goes from being cut in half to being whole between shots.
It had already been established pretty much from the engagement that J.D. would be Turk's best man, however he is asked here and there is some doubt where there was none before.
When JD is sitting on the roof toilet right before talking to Kevin, he is obviously wearing either underwear or a jock strap.
The microphone is visible in the top left as Ted walks by the Janitor after using the roof toilet.
On JD listens to Turk's brother's message on the answering machine, the brother refers to Turk as "Turk". But "Turk" is their family name, so he would use a different name for his brother.