Continuity mistake: Willona's ex-husband had 3 different names: Alvin, Ray, and Roger.
J.J. Becomes a Man: Part 2 - S2-E3
Visible crew/equipment: When Florida is begging James to borrow money from the loan shark, she and James stand up; Florida is on the left, James the right. At the top of Florida's head behind her you can see the microphone overhead and it moves quickly out of the frame. (00:32:00 - 00:33:00)
A Stormy Relationship - S4-E19
Continuity mistake: 1/3 through the program, Michael is given his father's tool belt by his mom and he puts the strap on his shoulder. The next shot and for a few after, the strap is gone. Then it comes back again.
Other mistake: The FBI agents call for a taxi and official transportation from the Evans apartment and gave the address of 963 North Gilbert. However, the Evans lived at 921 North Gilbert. Since the FBI was at their apartment, you would think that they would know the address or exactly where they are in a Chicago project. (00:13:03 - 00:28:29)
J.J.'s Fiancee: Part 2 - S3-E18
Continuity mistake: At the beginning of the show, JJ's girlfriend is wearing a shawl and the buttons are miss-buttoned by one button. In the next scene, the shawl is buttoned correctly.
Other mistake: JJ says that everybody else in the office just has to look at their watch when the boss asks them the time but he has to go outside down the block because he can't afford a watch. Throughout the whole scene, you can see a wristwatch on his right wrist. He even raises his arm where his sleeve moves to his elbow to show it. It looks like a pretty expensive watch too. (00:05:00)
Visible crew/equipment: After JJ gives Michael his little black book, Penny spots Boom-Boom's name and numbers. When Willona walks over she sits on the back of the couch, and the bulge of her mic transmitter bodypack is visible at her lower back, with the transmitter wires also hanging out. (00:04:15)
Springtime in the Ghetto - S1-E10
Continuity mistake: In one scene, the plaque Florida wins is on the wall before she actually wins it.
Answer: Carl did die of lung cancer, that's why she returned to her family.