Holy credit card, Batman! The Dark Knight sure does make you want to shop. The film, starring Christian Bale and Heath Ledger, scored the biggest opening in Hollywood history with $155 million. And while you may have already spent $10 on a movie ticket, there are superhero-sized amounts of Batman-inspired goods to keep the spirit of the movie alive. The official Warner Brothers Batman Store is a good place to begin. The general consensus is that Ledger steals the show as the Joker, so no doubt the black Joker T-shirt ($20) or the white “Why so serious?” Joker T ($20) is a good addition to any collection. A lunchbox with a Batman emblem is the perfect accessory for back to school ($14), while The Dark Knight limited-edition Batman bust ($66) or Joker statue ($165; pictured) could adorn the mantle of any comic-loving fan . At Target.com, fans can purchase The Dark Knight, a book featuring character sketches, director Christopher Nolan’s original shooting script and personal behind-the-scenes material created during filming ($27). Buzz is already growing for a possible Oscar nomination for the film’s music; pick up the movie’s soundtrack at Amazon ($13). Kmart offers fun Batman decor for youngsters. The Warner Brothers Batman rough bat valance ($12) goes perfectly with the Batman dark bat comforter ($25). Sweet superhero dreams!