Robert W. Morgan would do that occasionally, but more subtly. A tape I foolishly loaned out and never got back in the 70s was Morgan on KHJ in April of 1969. He played the Youngbloods' "Darkness, Darkness":
Morgan grunts through the ending, and over the final note says:
"KHJ. I'm not gonna play that again. In fact, I'm not even gonna tell you what it was, so that way, you won't know what it is I'm not playing. It's 8:22 in the Morgan."
He goes into a commercial break, comes out of it with a jingle and Andy Williams' "Happy Heart" and says "Ah, now this is more like it. Sing it, Andy!"
Historical footnote: "Darkness, Darkness" is among the 314 KHJ Hitbounds that never actually made it onto the (Boss) Thirty:
This page contains a list of Hitbound songs found on the KHJ Boss 30 that didn't end up making the survey.
www.thebig93.com
Emperor Bob Hudson would do it, too. I remember him back-announcing a record with:
"Sounds like a turtle drowning. Which isn't bad if you do it right."
Backstory on this: KBLA had been block programmed. Lawrence Welk had taken a radio version of his thing over to KBLA after ABC radio ditched it, and that was their morning drive program.
They dumped Welk and the other stuff in August of 1964, hired Tom for mornings, and began morphing to Top 40, with the payoff coming February 12, 1965 in a full-on Top 40 format intended to take on KRLA and KFWB (KHJ's flip to Boss Radio was still two and a half months away and no one knew that was coming yet---KHJ was planning at that point to launch an assault on KMPC as a personality MOR).
Duggan's act was what it was because he had been part entertainer/part commentator at WMAQ in Chicago, and became a big local star in the early 50s by being blunt and somewhat controversial. They might have thought he'd be the guy to counter Emperor Hudson on KRLA. But he flamed out at KBLA in a couple of months, then went to KLAC as a talk host, and was there four years---until he was killed in a traffic accident in 1969.
The acting gigs were a side hustle not uncommon for L.A. radio talent in the early-mid-60s (and later)---from
Dick Whittinghill to
The Real Don Steele, and
Michael Jackson.