You've all neglected to comment on the most important part of the episode: Tony humming the opening bars of the Rocky theme when he happens upon A.J. jogging. I could hear Philly Boy Roy cheering (I'm guessing the door to the store through the window of which he was viewing was open to let in a breeze so the sound reached him).
I didn't mind the ending. Anything specific would have been a letdown; this was a bit of a letdown, too, but at least it didn't spell things out. Certainly, I expected either that guy to come out of the bathroom with gun a-blazing or for the restaurant to blow up just as Meadow opened the door to enter, so the black screen at least had the virtue of being a surprise. Plus the absence of music during the closing credits.
Great cat, too!
I think I may actually watch it again.