Revealing mistake: At the end of the 'crashed plane in a tree' rescue, Tom falls upside down in front of Roy and John, who are standing on branches way high up in the tree. Then just as the scene ends and the screen fades out, we can still see Gary Crosby (Tom) having fun jumping hard up and down on that "tree branch" that he's now also standing on, and Randy Mantooth starts cracking up.

Emergency! (1972)
1 revealing mistake in Crash - chronological order
Starring: Kevin Tighe, Vernon Weddle, Bobby Troup, Julie London, Michael Norell, Randolph Mantooth

Revealing mistake: After the two drivers from the traffic accident walk off holding hands, and Johnny tells Roy what happened with Barbara, while Roy explains "body-language" to Johnny, we can see the white tape with "Kevin" inside Roy's helmet.
Captain Stanley: How are you and Brice getting along?
Roy: Fine. Fine. We're getting along just fine.
Captain Stanley: Thought for a while there might be a little personality problem.
Roy: No, I can work with just about anybody. I can get along with just about anybody.
Captain Stanley: Glad to hear that.
Roy: Just might have to bust him in the mouth to do it.
Trivia: Keep your eyes peeled for the big sheepdog who runs right into the patio door in the background, when Roy and Johnny are with the sitter who's hyperventilating, due to three very obnoxious boys she's been babysitting, and then the look on Johnny's face as he tries not to break character when he turns to Roy and says "Dumb dog." Also, a few moments later you'll see Roy and his imaginary watch. Absolutely priceless.
Question: The old man that comes in with his wife that can't breathe, the one that the head nurse tries to counsel and tempts him with a cup of coffee. I believe he is Alfred Hitchcock, though his name is not listed anywhere. Alfred Hitchcock is known for his cameo appearances in his own shows and in other shows. Can someone confirm that this is him? This is driving me nuts... It is toward the end of the episode, but I cannot give you times.





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.