Continuity mistake: When they pull the man with chest pains from the pickup truck, Dixie says treatment 3, which is opposite the receiving entrance and on the same side of the hall as the nurses' station, closest to the red line on the hallway floor, but when Dixie leaves the treatment room it's at the side of the hallway closest to the yellow line, and since there's a window on its door we know it's actually treatment 1 that he's in, not 3.
Continuity mistake: At the restaurant, when they begin to work on getting Mrs. Merkle out from under the car, Vince sets the Biophone down on the table, and there's a netted, red glass candle on the table, but in a following closeup the candle's net has vanished and it's pinkish clear glass now. Other items on the table change as well.
Continuity mistake: When Roy and Johnny go to get on the helicopter they are with only the orange bio-phone, but after The Boat brings them back to the shore you see them running to the helicopter with the patients, and they pick up their large black trauma box. They didn't have it with them when they left.
Continuity mistake: When Mr. And Mrs. Merkle visit the station the first time, Mrs. Merkle's long, pointed blouse collar jumps under and over her sweater repeatedly.
Continuity mistake: When they pull Mrs. Merkle from under the wrecked car in the restaurant, the BP cuff is not visible around her right arm, but in her closeup she has the wide BP cuff around her arm with the gauge facing up, then in the wide shot once again the BP cuff is not visible.
Continuity mistake: When Marco and Chet use the jaws to lift the car off the victim, Roy begins to get her vitals, then it cuts to Captain Stanley on the Biophone saying, "Vitals second victim, pulse is 120, respiration's 30, she's pale and clammy," but it's not until quite a few shots later that Roy actually shouts those vitals to Captain Stanley.
Continuity mistake: The day after the awful fish dinner, when the Merkles visit the station again, Roy is holding a can of whipped cream in his right hand in the side shots, but in the shot facing him he's holding a carton of milk.
Continuity mistake: In the opening shot of Roy and Johnny at the whale tank, the maintenance guy behind them is standing between the red bleacher seats and purple seats below, but in Roy and Johnny's closeups the guy is standing between the two top purple bleacher seats, then when the whale splashes, it goes back and forth yet again.
The Tycoons - S5-E23
Continuity mistake: When the patient with the heart wound is brought to the ER, he's wheeled into treatment 2, which has a window on its door, and is on the side of the hallway with the yellow line closest to it. Later we see treatment 1 twice, when Vince brings in the burglary suspect with a bullet in his leg, and also when John and Roy rush the baby to the ER. They used the same room as treatment 1 and treatment 2, but there are just two treatment rooms on that side of the hallway and only one of them has a window on its door - the one that's opposite the nurses' station, treatment 1.
Continuity mistake: At the nurses' station, after Roy tells Brice that Brightweiser will be okay the two of them walk to receiving carrying their gear, with Roy holding the Biophone and defibrillator, but as they head through the doors both the Biophone and defibrillator have each turned around in Roy's hands, and now face the opposite way.
Continuity mistake: After Roy shows Brice the drug box, Roy places it back into the squad's side bay in the closeup, but in the wide shot Roy's still holding the drug box while Brice acts like his annoying self.
Continuity mistake: When Johnny is being examined by Dr. Early and Dr. Morton, Roy is in the treatment room with them, and he's not wearing a watch, but when Roy steps into the hallway and speaks to Chet he's suddenly wearing a watch.
Continuity mistake: When Early walks into the staff lounge after Johnny's surgery, and joins Roy at the table, Early's holding the cup of coffee with his right hand in the shot facing Roy, but in the shot facing Early he's holding the cup with his left hand.
Continuity mistake: While Early is examining Johnny in the ER, telling Roy about symptoms for ruptured liver or spleen, in the closeup Roy's holding up the IV bag with his right hand, but next wide shot it's held up in Roy's left hand.
Continuity mistake: When Johnny is hit by the car, the open drug box is lying on the ground right-side up in the first shot, then upside down in the second shot.
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.