SALEM, N.H. - Presidential hopeful Mitt Romney in an interview Monday dismissed concerns he's too nice to be a viable candidate in a vicious race, proving it by taking a swipe at yet-to-announced GOP rival Fred Thompson. "We all get the chance to go on the talk shows. But it's not the sort of questions you get in the debates or the town meetings that I've had," Romney said in an Associated Press interview, alluding to plans by Thompson to formally announced his candidacy during a planned Wednesday night appearance on the "Tonight Show with Jay Leno." "The talk show...