Revealing mistake: At the end of the episode before Tim opens the front door for Julie Zwicky, you can see the actress' silhouette in the window pane for several moments before she rings the doorbell, showing her to be waiting for her cue.
Home Improvement (1991)
1 mistake in Jill's Surprise Party
Heidi: Does everybody know what time it is?
More trivia for Home Improvement
Question: Was the actor who played Cal Boreland really Richard Karn's brother in real life?
Answer: According to imdb.com: Richard has only one sister. http://uk.imdb.com/name/nm0439781/bio.
Answer: It should also be noted, Richard Karn is his stage name as Karn is his middle name. His real name is Richard Wilson. Cal was played by Keith Lehman.
Siblings can have different last names. One might have a different father. Maybe one legally changed his name for some reason, or a man took his wife's last name (not as common, but it happens). Of course, these two actors are not actually related, but I just wanted to point this out.
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Answer: No the guy sent in a picture of himself because he thought he looked like Al. So they brought him on the show as his brother.
Bowling255 ★