Was it his inner Native American calling? Reports are that Johnny Depp, the Kentucky-born superstar of mixed German, Cherokee and Irish ancestry, has agreed to play Tonto in a new version of "The Lone Ranger." He'll be collaborating again with the director of "Pirates" movies 1, 2, and 3, Gore Verbinski. We liked it better when Depp was talking about remaking "The Thin Man" with his "Pirates 4" director, Rob Marshall. But Depp has often been at his best when confounding expectations, and a strait-laced saga like that of the party-masked Texas Ranger and his trusted Indian sidekick could use a dose of Depp's inspired comic anarchy.