I am a big fan of Attack of the Killer Tomatoes, but I never liked any of the sequels; the humor just didn't work for me. In the original, the humor worked mostly because it was slightly awkward. There was also much more subtle humor in the first one than in the sequels. As much as I like John Astin in The Addams Family and even in The Adventures of Brisco County, Jr., I just don't care for him in most other projects.
Wasn't John Austin the dad in the original Freaky Friday ?