There is currently an ad for McDonalds that features a "mellow" DJ eating a spicy sandwich from said company.... the "jingle" is "all mellow all the time" - The "DJ" reacts to the spice in the sandwich by shouting the tag line at the top of his voice.....
I know radio has been featured in movies - Good Morning Vietnam- .... Play Misty Fore Me...American Graffiti etc. Have there been other commercials that have used radio as the prop to get the message to the audience (not including station promotions)