Long before the Bachelor/Bachelorette, there was the Dating Game. If you won, you went on a chaperoned date (according the the NY Times the chaperone might be Jim or Chuck), usually for a dinner at Catalina Island. Groucho Marx daughter won the grand Kahuna, a trip to William Holden's African safari resort. Groucho asked the questions and picked the date for a father's day edition of the show.
The list of celebrities that appeared on the show is a 60's who's who. Some were celebrities already, others had yet to break through.
Steve Martin twice. He got picked by the ladies both times
Karen Carpenter
Farrah Fawcett
Pee Wee Herman
Arnold Schwarzenegger
John Ritter
Suzanne Sommers
Andy Kaufman
Yvonne Craig
Michael Jackson
Richard Dawson
Bill Bixby (was on 4 times) He and Dawson appeared on an episode together
Groucho Marx (he interviewed the guys for his daughter) Hilarious.
Maureen McCormick
Barry Williams
The Grassroots: Warren Entner and Rick Coonce
Robert Vaughn
Jim was poised yet retained just the right amount of sarcasm to make him the perfect host for the show.