Using real GLO names in TV/movies?

[PGD-GRAD]

On the show Coach, the main character had a Beta Theta Pi paddle hanging on his office wall in the opening credits. I can't remember if it was mentioned often in the show, or if he was a Beta in real life.

In Designing Women, the Julia character several times mentioned being a Tri Delt, which she was in real life. The Suzanne character, Delta Burke, was supposed to be a Pi Phi from a school in Mississippi. In reality, she was not Greek.