I've heard "Cheeseburger In Paradise," mostly because my ex-in-laws had a satellite dish and we used to occasionally turn on a channel called MOR Music. They used to play it a lot. I actually didn't realize that the song was from 1978, since I would have seen the video some time between 1992 and 1997. (500 channels, and we were watching music videos. Sigh. But that's a rant for another time. ;) )

And I have "Dance, Dance, Dance (Yowsah, Yowsah, Yowsah)" on a 70s compilation CD, but I don't recall it being a big hit. Perhaps I just listened to the wrong radio station back then.