Forbes has released its "Celebrity 100," the list of the year's most powerful celebs, and there were some changes this year. Oprah took the top spot, knocking Tom Cruise down to number 8. Hollywood's golden couple faired quite well, with Brad Pitt at 5 and Angelina Jolie at 14. The bad girls of L.A. didn't make the cut at all when Paris Hilton dropped off the list completely, after having been a mainstay since 2004. ...