Harry Potter and the Prisoner of Azkaban fended off a trio of newcomers to maintain its hold atop the box office. Despite tumbling a steep 63 percent from last weekend's debut, the third chapter in the boy-wizard saga brought in $35.1 million for a 10-day total of $158.1 million. Vin Diesel's Pitch Black follow-up, The Chronicles of Riddick, opened at No. 2 with a so-so $24.6 million, while Nicole Kidman's black comedy remake of The Stepford Wives alright, were they robots or not? exceeded expectations by taking in $22.2 million for fourth place. Rounding out the top five was Garfield: The Movie, which survived a critical pummeling to gobble up a pretty fat $21.7 million. (That noise you hear is Jennifer Love Hewitt dodging a big bullet.) Finally, Shrek 2 (No. 3 with $24 million) surpassed Finding Nemo as the highest-grossing animated pic of all time.