Michael Pollack is the college freshman at Vanderbilt University who stood up during a visit from music icon Billy Joel and asked the legend if he could perform with him. To everyone's amazement, Billy said yes, so Michael went up on stage, sat down on the piano, and proceeded to wow everyone - including Billy himself - with his rendition of Billy's hit "New York State of Mind."

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The video of Michael's performance ended up online, and quickly became viral, attracting millions of views. Now Michael's sitting down with Jeff Probst and recounting the experience. He says it was the single greatest moment of his life! Check it out in this video!

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Michael Pollack visits

The statistics are staggering: It's estimated that half a million people have been raped or sexually assaulted while serving our country in the U.S. military, including nearly 100,000 in the past seven years. What's even more astounding is that a vast majority of those assaults have never been reported, let alone investigated or brought to trial.

In this clip from "The Jeff Probst Show," Jeff talks with Amy Ziering and Kirby Dick, the filmmakers behind the eye-opening (and Academy-Award-nominated) documentary feature "The Invisible War," which shines a light on this growing epidemic. Amy and Kirby discuss why this shameful issue has never properly been given the attention is deserves, and why victims are discouraged from speaking up or reporting their assailants.

If you'd like more information or resources about this issue, click here.

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Brett Raymer and Wayde King are the brothers-in-law behind some of the biggest and most elaborate aquariums in the world. They're filmed as they travel the country installing amazing tanks, and the end result is the hit Animal Planet show 'Tanked.'

In this clip from "The Jeff Probst Show," Brett and Wayde show Jeff unique and interesting underwater creatures that find homes in the aquariums that they build. From the angler, with its clever way of attracting prey, to a sea snail to a shark, these creatures could liven up your fish tank, too!

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The new Bravo reality show "LA Shrinks" does something that you don't see on television very often: it pulls back the curtain on the lives of psychiatrists. The show shares not only their professional lives, but their personal lives as well, and the picture isn't always pretty.

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Dr. Eris, Dr. V, and Dr. Greg, the three doctors who star on the show, stopped by "The Jeff Probst Show," and in this clip, they talk with Jeff about the backlash they've gotten from their professional community about appearing on a reality show. Plus, they share some of the biggest misconceptions out there about going into therapy, so listen up!

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In a lot of ways, 16-year-old Kolby Koloff is a lot like every other teenage girl who is interested in dating, but there one difference that separates her from most: she's the daughter of two preachers, and Kolby has to juggle her own desires and wishes with the expectations of her family and church.

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Kolby and her parents, Nikita and Victoria, are featured in the new Lifetime show "Preachers' Daughters", and they recently visited "The Jeff Probst Show" to talk about the show and their lives. In this clip, they talk about the dating contract that Victoria wrote and presents to every young man that's interested in taking Kolby out on a date. Do you think Victoria is going too far with her dating contract?

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Preachers' Daughters stars on The Jeff Probst Show