Keith Urban: The 'scratching post' on 'American Idol'

Keith Urban may not have gotten the off-season attention that his fellow American Idol judges Mariah Carey and Nicki Minaj have, but Idol executive producer Nigel Lythgoe believes Urban plays a key role on the show's 12th-season judging panel. Urban's "the scratching post between Mariah and Nicki," Lythgoe said in a conference call with reporters Wednesday.

"He sometimes looks like he's watching a...