I very well remember this thing, because it played around 6 AM on the very first station I ever worked at. Everyone in the place hated it, because they knew it was a total tune-out for the programming that followed, but it was easy money for the station and management and the sales department were happy to have a tough timeslot paid for. 

There was another show that aired early Sunday morning (as in middle of the night) on WLS Chicago of all places, that I wonder if anyone else remembers hearing. It was called "Powerline" and unlike the World Tomorrow, this one was in keeping with the station's Top 40 format. It played uplifting rock music between the preaching, trying to attract the format's core audience. It wasn't fire and brimstone, just very subtle about its proselytizing. But it aired there for years. Not sure if it was on any other channel. 

Speaking of which, there's a rather annoying spot currently airing on both radio and TV locally, for what I think is the Billy Graham Association, which gives a long prelude about Jesus, then asks viewers/listeners to say a prayer along with the announcer. For some reason, I find this very uncomfortable and it doesn't exactly fit the programming of the stations where it's appeared. (Although it's not out of place on Yes TV, which has significant religious programming in some of its dayparts,)

They must be paying a lot of money for it - it's on constantly and even if it sounds a bit odd, stations appear to have it on high commercial rotation. I have nothing specific against organized religion, per se, but there's something vaguely creepy about this spot telling viewers they're all sinners and they should beg for forgiveness.

Hopefully, it's just for the Christmas season and not all year round. 

Back To The Bible, Focus On The Family and Peter Popoff, I cued them up at various times at various stations.

I'm not at all religious but I have to admit I did enjoy listening to "Unshackled" when I had to drive overnight on the eastern Ontario stretch of the 401. It's a daily radio drama, running since 1950, reenacting "true" stories of individuals who have been "saved " - but its production and story techniques haven't changed since the fifties - complete with organ music - so it sounds just like a old tyme golden age radio show. 

You can catch an episode here if you're curious: https://www.oneplace.com/ministries/unshackled/

Does anyone remember Charles Templeton? He was a barnstorming evangelist in the 40s and 50s, alongside Billy Graham, and was  a radio evangelist on CKEY and CHUM in the 1940s and then host of "Look up and Live" on CBS in the 1950s (back when networks actually sponsored religious programs as part of their public service writ). Then, in 1958 he had a crisis of conscience, declared himself an agnostic, and returned to Canada where he had a varied career including managing editor of the Toronto Star, editor of Macleans, a failed bid to become leader of the Ontario Liberal Party, director of public affairs programming and host on CTV (including co-anchoring their coverage of the moon landing) and for about 20 years as co-host with Pierre Berton of "Dialogue", a daily debate/commentary segment first on CFRB and then from 1970 until 1983 on CKEY as well as being CKEY's morning news reader. 

I remember Garner Ted very well.  6 a.m. on CKFH, Mon-Fri and 9:05 p.m. Mon-Fri on CKLB in Oshawa.  Imagine.  Top 40 from 5-9 pm.  News break, followed by Garner Ted rill 9:35.  Then back to music till 11 pm.  Strange; but true.

With the, um, advent of Christian radio, it's much rarer to hear preachers on commercial radio. Can anyone think of holy rollers or small town preachers who still buy time on mainstream radio stations - or local stations that still schedule them? 

Back when I first started in the biz,(1976) my first gig was slave labour at CFPA radio in Thunder Bay, 6 to midnight 6 days a week.  And on the sixth day 3:30 to midnight.  Every day at 6 pm it was Back to the Bible. At 6:30 it was another canned religious program that started with boat sound effects and that's the only thing I remember about it!   On Sunday, a local Baptist preacher got into the act with his show and some of the time he talked about circumcision.  No kidding!  I'm 21 years old, what was with this circumcision stuff.  I think I lead a sheltered life.