In the last scene, where JD pours Turk a drink from the jug, you can see two guys bowling in the background. The guy on the right bowls, while the guy in the pink shirt on the left does not; he goes to throw the ball, but instead holds onto it, then walks back to his friends and high fives as if he has just bowled a strike.
When the interns follow Dr. Cow, in their jerseys, he tells them that it is the "get hit line". His stethoscope is tucked under his coat in one shot, but atop it in the next.