You know summer is over when the top film at the box office brings in less than $10 million. In its second weekend, Jet Li's martial-arts flick Hero grossed just $9 million — good enough to hang on to the No. 1 spot. The comedy Without a Paddle placed second with $7.1 million, followed by Anacondas: The Hunt for the Blood Orchid (No. 3 with $6.4 million). Meanwhile, the weekend's four new releases — Paparazzi, The Cookout, Wicker Park and Vanity Fair — crashed and burned. (I won't humiliate them by printing their specific hauls. Actually, I'm just being lazy.) Despite the disappointing finish, the summer of 2004 was one for the record books. Buoyed by Shrek, Spider-Man and Harry Potter sequels, ticket sales totaled just under $4 billion — an all-time high.