15 Most Frequent Celebrity Guests

9 (tie). Barbara Walters

Arguably the most famous interviewer in television history, journalist Barbara Walters has been breaking boundaries for more than a half century. And, since the beginning of Oprah's career, Barbara has been an inspiration. Whether she's praising news colleagues like Bryant Gumbel or Ted Koppel or speaking about her own revelations, Barbara has been a voice of wisdom on The Oprah Show.

One of the highlights of Barbara's 18 appearances was when Barbara and her co-hosts on The View came to The Oprah Show. 

Go behind the scenes at The View!