Celine Dion's rendition of AC/DC's You Shook Me All Night Long has been voted the worst cover ever, according to Total Guitar magazine. The UK mag called the duet Dion performed with Anastacia in Las Vegas 6 years ago an "offense" against music. "The No. 1 worst cover song—Celine Dion covering AC/DC—is sacrilege," said magazine editor Stephen Lawson. (More Celine Dion stories.)