America's first drive-in theatre - which was also the world's first drive-in theatre - opened on June 6, 1933, and the act of watching movies from one's car proved so enduringly popular that now, 75 years later, hundreds of drive-ins can be found in locations all across the country.

Then again, there used to be thousands.

PINEAPPLE EXPRESS

As the happily zonked, pot-dealing Saul in Pineapple Express - written by Superbad screenwriters Seth Rogen (who also stars) and Evan Goldberg - James Franco is wonderfully unpredictable. The actor has flashed the occasional grin in previous film roles, but his uncanny resemblance to James Dean finds him so often used for brooding melancholy, most notably in the Spider-Man films, that his emergence as an inventive and quick-witted comedian in this stoner-buddy action farce is cause for celebration. Or rather, it would be, if Franco had a better movie in which to display his gifts.

THE MUMMY: TOMB OF THE DRAGON EMPEROR

Obviously we're not meant to take The Mummy: Tomb of the Dragon Emperor seriously, as it's a fantasy in which Brendan Fraser kicks the crap out of Jet Li. But honestly, even on this harmlessly dopey franchise's own lowbrow terms, could director Rob Cohen's installment be any more witless?

After two weekends, the only question remaining about The Dark Knight's box-office prowess is whether it will become the all-time domestic champion, toppling Titanic. It's unlikely, but Christopher Nolan's second Batman movie is a very good bet to unseat Star Wars from second place, as long as we don't consider pesky factors such as inflation.