Barbara Walters' 10 Most Fascinating People: Gen. David Petraeus Tops List

NEW YORK (CBS) Barbara Walters presented the full lineup of her 10 Most Fascinating People of 2010 last night, with Gen. David Petraeus topping the list.

"In life, it seems, there are people who break things and people who fix them," Walters said of Petraeus, who was appointed top U.S. commander in Afghanistan in June. "This man is a fixer."

Also on the list: new "American Idol" judge Jennifer Lopez, singer Justin Bieber, NBA star Lebron James, Kate Middleton, actresses Sandra Bullock and Betty White, Facebook CEO and founder Mark Zuckerberg , Sarah Palin and the cast of "Jersey Shore."

Lopez talked to Walters about her new judging gig and dismissed her critics who said she can't sing, saying "[selling] 40-50 million records doesn't lie."

During her interview with the "Jersey Shore" cast, Walters learned a lesson about "GTL" (gym, tan and laundry), "smooshing" and "gernades."

While Bullock sat down with Walters to discuss about her year, including her Oscar win and her divorce with Jesse James.