Here is some trivia courtesy of IMDB. There’s a lot of interesting facts as well!
- The show was cancelled during its first season. It was brought back the next year after fans staged a letter-writing campaign.
- According to an interview with Roma Downey, many of the clothes Monica wore in the first season were Downey's. She wore such a small size, the wardrobe department didn't have anything that would fit her.
- At the beginning of season four, Della Reese threatened to leave the show if CBS and Martha Williamson didn't increase her salary.
- Tess (Della Reese) sends the other angels out on missions to help people redeem their lives and show them God's love, in real-life, Reese was an ordained minister.
- In numerous interviews, Roma Downey said that her child Reilly is the goddaughter to Della Reese.
- Bill Cosby was scheduled to make a cameo as the Angel of Fun. After the murder of his son Ennis, the appearance was cancelled. However, he did appear as Phil, the Angel of Restoration.
- Della Reese was sixty-three-years-old when the show started.
There's more, and I'll post the rest another time.