Other mistake: When Station 51 is dispatched to the woman who fell through the ground into the abandoned well in her backyard, en route there's a moving bird's-eye view as the filming chopper follows 51's vehicles making a right turn. On the ground below, there are two people standing beside a blue station wagon, and one points up to the filming chopper flying overhead.
Other mistake: When the dispatcher sends Station 51 to 26309 Barcelona Drive, as the squad pulls up in front of the house, the number on the mailbox post reads 4050.
Other mistake: At the end of the episode, when Roy, Johnny, and Chet are at their lockers, Roy comments that Gloria won't make the same mistake twice about the $8.42, and Chet laughs, but the subtitles read, "Marco laughing", even though Marco is not in the scene. Subtitles from Universal Studios 2010 DVD.
Other mistake: While John is searching through the papers for the receipt, when Roy takes the milk carton out of the fridge he pours some into a glass and some ends up spilling onto the floor, we can see there's black tape on the milk carton covering the brand name.
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.