Oprah viewers in the United States leaked details of her Aussie Adventure series online prior to its premiere showing in Australia.

Spoilers were posted by viewers on the show’s online forum and the Daily Telegraph's official Oprah Facebook fan page raving about the first episode showcasing the beauty of Hamilton Island and the Great Barrier Reef. The episode also featured her having a beach BBQ with famous Australian chef Curtis Stone.

U.S.-based viewer Barrie Anne Maguire posted on Facebook: "I won't leave any spoilers, but have a hanky or some Kleenex tissues handy! You might need to dab at your eye a time or two. :))"

"The only big star on the 1st episode I saw today (beside Oprah herself) was Curtis Stone. That's as much as I can tell you, I don't want to spoil for anyone...stay tuned, you will NOT be disappointed. I promise," she wrote. "Let me just say this, though, Australia couldn't have PAID for a better commercial advertisement! The show made me want to hop a plane and fly to the other side of the world RIGHT NOW.... :))))"

The first installment of Oprah's Aussie Adventure series will be shown at 7.30 pm tonight on Channel Ten.