Family Ties - S6-E16
Revealing mistake: When the fire is started in the patient's room, which is caused by liquid shorting out the clock radio, at the end of the hallway we can see through the window's open shades and the view right outside the window is quite pretty, but in all of the exterior shots of Rampart there is no such view on any of its sides. It's a matte painting.
Continuity mistake: After Station 51 is dispatched to Oceanland Park, when the engine and squad drive through the parking lot and pull up in front of the sky-tower, the entire left side of the lot is completely empty, but in the overhead shot as they head to the top of the sky-tower for the rescue, that side of the lot is filled with buses, cars, and other vehicles.
Continuity mistake: When Station 51 is dispatched to Oceanland Park, when the engine and squad arrive on scene at the sky-tower, Engine 51's hosebed is suddenly entirely covered with green canvas.
An Ounce of Prevention - S6-E13
Continuity mistake: While at the Tom Jensen Show, after one of their crew receives an electrical shock, Roy comes back from the squad and carries the drug box in his right hand and Biophone in his left, but next shot they've switched hands.
An Ounce of Prevention - S6-E13
Continuity mistake: When Roy and Johnny walk into the day room all spiffy and ready to leave for the Tom Jensen Show, Chet's legs go back and forth from being uncrossed to crossed, depending on the angle of the shot. As an aside, something to watch for is Henry the dog burying his face between Chet's legs, and Chet's reaction.
Welcome to Santa Rosa County - S6-E10
Continuity mistake: When Bittner brings John and Roy back to the lake for the fishing, The Boat on the lake explodes and Roy and John dive into the lake and rescue the burn victim, but when they're at the back of the camper with the victim, heading to the clinic, Roy's and John's jeans and shirts are completely dry.
Welcome to Santa Rosa County - S6-E10
Revealing mistake: While in Santa Rosa County, after Roy and John rescue the two injured rock climbers, and also later after they rescue the burn victim from the lake, the Richards ambulance that transports the patients has license plate number "Z125631" which is pretty funny. That plate number should look familiar, as it's the same plate number on the ambulance in LA County, seen in many episodes such as "Rules of Order", "Unlikely Heirs", and "Not Available."
Revealing mistake: On the roof of the jail, Roy buckles his safety belt around his waist, with an extra belt for the prisoner hanging from it as well. When Roy removes the second belt from his own, we can see two carabiners that are now attached to his lifebelt, which go down into Roy's pants. Those carabiners are presumably attached to extra support under Roy's pants.
Revealing mistake: During the rescue of the two mountain climbers who are stuck on the side of a building, when Johnny and Roy are hanging from the lines which are attached to the lifebelts buckled around their waists, we can also see that attached to their lifebelts are carabiners, which are tucked inside their shirts. Those carabiners are presumably attached to extra support under their clothing. Johnny's is particularly visible, while Roy tries to cover his carabiners with his hand.
Continuity mistake: While Roy, John, Brice, and Bob are standing at the nurses' station, there's a closeup of Brice's arm as he explains that he's checking his drug box, and the watch he's wearing in the closeup has a gold/silver metal link watchband, but Brice is wearing a different style watch, with leather straps and buckle.
Continuity mistake: After Brice completely ticks off John regarding the advisory committee while standing at the nurses' station, when John and Roy walk up the hallway to the receiving entrance Roy's not wearing his watch as he's carrying the drug box, but at receiving he's wearing his watch.
Revealing mistake: When Station 51 is dispatched to "plane that hit building," after they rescue the two aboard the plane, just before the explosion when the orange combustible drum is propelled into the air, we can see the stunt's projectile to get the drum airborne.
Revealing mistake: When Station 51 is dispatched to "accident with injuries," en route one of the camera angles is from the POV behind Roy and John, where the back of the squad is located. The problem is that there's bright sunlight on their backs as they’re driving, when it shouldn't be there. Artistic license is acceptable, but having so much sunlight where it should not be reveals that Squad 51 is not in its normal state.
Continuity mistake: After Roy explains to Mrs. Evans that she shouldn't call them every time Simba runs off, when Chet finds Simba, Johnny holds him with his right hand behind the front legs and left hand under the tail, but closeup Johnny's hands are in the opposite positions.
Continuity mistake: When 51's guys are on the roof of the jail, Johnny sets up the red hose roller with a safety line on the roof edge between the two ladders, but when Roy climbs up the orange ladder to go over the edge, that hose roller with the safety line are not on the roof edge and can be seen still lying on the ground, then it reappears in place in the aerial shot. Additionally, when Roy goes over the roof to make his descent, there's a second silver hose roller at the base of the overhang, which was never actually placed there.
Continuity mistake: At the start of the USC game, after Johnny uses the Heimlich on the choking guy, when Roy asks him to take a deep breath Roy's left hand is on the man's chest, but in the next shot it is Roy's right hand that's on the man's chest.
Paper Work - S6-E11
Continuity mistake: When John's in the storm drain with the boy, in the closeups the water rushing from the broken hydrant has a very strong current, and Roy's holding the boy's head up out of the water, but in the wide shots the current is nearly calm, nowhere as intense as the closeups, and Roy's not holding the boy's head.
Captain Hook - S6-E8
Continuity mistake: During the police chopper rescue, three ropes are tied off onto Engine 51's eyes, and when Mike backs the engine up while the stokes carrying Frank is pulled up, in shots facing the engine the three lines are being pulled backwards simultaneously, but in the shots of Marco, the stokes, and the ground, only the line with the stokes is being pulled up, the other two ropes are lying on the ground completely still.
Continuity mistake: When Roy and John are helping Jeanine get her head unstuck from the table, Jeanine's braid is very loose and coming apart, but when her head is free and she jumps into her mother's arms, Jeanine's braid is braided properly.
Character mistake: When Mr. Grady, the self defense instructor, and his wife are in the ER waiting room after Brackett taped up his fractured ribs, Mr. Grady makes a comment about being flipped, and instead of saying Mrs. Pestone he says the name incorrectly as Prestin, then a few moments later he says her name properly, just as he did earlier during the class.
Answer: I believe you are speaking of the old man, Mr. Wilson. He's played by J. Pat O'Malley.
Bishop73
Correct, it was J. Pat O'Malley...he also played the grandfather with his grandson when their rocket exploded, and also played "Old Bill" in the episode with Ann Prentiss, where Gage saves the little girl from the burning tree house, and her mother falls in love with him.