From LiteFavorites and the primetime version of The Dating Game comes an interesting offering.
The one big difference between the primetime series and its daytime counterpart was that producer Chuck Barris would routinely use celebrity guests either as bachelors/bachelorettes or contestants on the night edition, although I think it was daytime only on ABC by the time the likes of Michael Jackson and Arnold Schwarzenegger appeared on the show in the 70's. Anyway, in 1967, it was an eclectic mix that included comedians Groucho Marx, Don Rickles, and, in the following video, Bill Dana, whose Jose Jiminez persona fueled his self-titled sitcom, and, as host Jim Lange helpfully notes, Dana was working on Milton Berle's variety show at the time as a producer. The lineup also included Batgirl herself, Yvonne Craig. This same video has Dana competing with an up and coming icon in the music business, none other than Casey Kasem, who was at the time hosting Dick Clark's regionally produced Shebang. For Casey, this was, as far as I know, his national television debut. You can tell Dana was there strictly for laughs, making it almost obvious who would end up with the date.
Edit: 7/28/15: The video has been deleted due to a copyright claim placed by Sony Pictures Television, current rights holder.
Yes, as Lange notes in introducing Casey, the future king of the countdowns was doing movies at the time, and 4 years later, he'd get his most significant role in "The Incredible Two Headed Transplant", with ex-Munsters co-star Pat Priest. Suffice it to say, he fared much better in that case.