At the movies, the critically reviled Ace Ventura: Pet Detective is No. 1 at the box office and launches Jim Carrey into superstardom. On TV, Roseanne gobbles up competitors, as ABC’s Roseanne leads the weekly Nielsen race. In music, ”The Sign,” from flash-in-the-pan Swedes Ace of Base, emigrates to the top of the pop singles chart. And in the news, as part of the ongoing Whitewater investigation, a special counsel continues to look into allegations of paper shredding at Hillary Clinton’s Rose Law Firm in Little Rock, Ark.