When Keith walks in carrying the dry cleaning, there is a small hole visible in the right upper area of the door. In the next shot when JJ enters, there is now a piece of tape over the hole.
At the club, J.J. is wearing several chains and medallions around his neck. When he and T.C. arrive at the empty apartment having just left the club, he is no longer wearing them when they start to make out.
JJ sees TC all dressed up at the club and exclaims to TC that he hardly recognizes her. However, in "JJ and the Plumber's Helper", JJ saw TC all dressed up (played by a different actress), was very impressed, and agreed to go out to dinner with her as a result.