Tomorrow night before ABC airs Barbara Walters’ “Most Fascinating People of the Year” special (which we’ve already discussed here) they’re running her hour-long sit-down with Oprah Winfrey. According to Walters, it’s probably the most personal interview with O that you’ve ever seen. They even tackle those longtime Oprah/Gayle relationship rumors: “I’m not a lesbian,” says Oprah. “I’m not even kind of a lesbian. And the reason why it irritates me is because it means that somebody must think I’m lying. That’s number one. Number two, why would you want to hide it? That is not the way I run my life.” Click through to check out the teaser clip after the jump, but be warned: there are Oprah tears.