Here it is: The first “fascinating” evidence, a poolside pic, from Barbara Walters’s sit-down with David and Victoria Beckham for her annual special, Barbara Walters Presents: The 10 Most Fascinating People of 2007 (airing on ABC, Dec. 6, 10 p.m. ET). As for the other “fascinating” guests, well, the veteran news anchor likes to keep some under wraps (specifically her No. 1 choice). We do know, though, that Walters will interview Katherine Heigl, Justin Timberlake and Jennifer Hudson, among others.