If Rach and Dr. Phil have one thing in common, it's that Oprah has been a big part of both of their lives.

Dr. Phil first appeared on "The Oprah Winfrey Show" when he was a consultant on her trial with the beef industry in Texas in the late '90s.

"The actual first time I was ever on 'Oprah' was in Amarillo, Texas," the talk show host recalls, "the night the verdict came in."

"We were in the little theater in Amarillo, Texas," he goes on, "and she said 'I want to introduce you to the man that gave myself back to me, and that's Dr. Phil McGraw. And he's sitting right here."

(So, yes, Oprah essentially put Dr. Phil on the map!)

A few weeks later, Dr. Phil was contacted by one of Oprah's producers to be on the show again -- and he turned it down because he had plans to go scuba diving.

Did your jaw just drop? Because ours did -- and apparently Oprah's did at the time, too!

"About fifteen minutes later, the phone rang and it was Oprah," the TV personality says. "And she said 'You don't say no to the 'Oprah Show!''"

No, no you don't!