This honestly felt like any other episode, well part one did anyway, JD's leaving and he expects a goodbye from everyone. The only really funny scene is when JD turns off all the lights in the hospital in a fantasy, other than that, we got some flashbacks of his first day, and some heartfelt goodbye's, not all but some.
Turk's goodbye was hilarious, and of course heartwarming. Kelso decides not going back to work and leaves with his favorite table at the coffee shop after hanging around there all season. Cox can't say goodbye to JD, it's just a "day." That part was heartbreaking for JD and myself.
Other than that, this episode was just setup for the rest of the series finale: part two. It was entertaining though. I'll give it that.