From Alex Strachan of Canwest:

• Elvis Costello has a rep for being a difficult — read: prickly — interview. So why is he so mellow and talkative on the phone, then?
  “I guessed – possibly correctly, though you never know with the celebrity/gossip tabloid crowd – that I was the only interviewer that day dumb and/or craven enough to lead off with a question about American Idol. And I knew that, given Costello’s rep for being a difficult interview, I was risking him pulling a Carrie Prejean, who famously – if somewhat incoherently – stormed out on Larry King after being asked one too many questions that she didn’t like. He got it, though, and it was all good from there.” Read more.