Speaking of odd themes, I seem to remember Family Film Festival hosted by "Popeye" Tom Hatten on L.
A.'s KTLA channrl 5 used Industrial Disease for a theme for a while.
After questioning, the "bachelorette" chose one of the bachelors for her date, based only on how they answered her questions.
The same question could be asked to multiple bachelors.
The questions were written in advance by the producers.
Certain kinds of questions such as name, age, occupation, and income cannot be asked. The bachelorette would make her choice based solely on the answers to her questions.
After making her choice, the bachelorette met the two unchosen bachelors before meeting the chosen one.