Walter Salles was an obvious choice to direct the movie of Jack Kerouac’s roman à clef about his peripatetic life in 1947-50 and his worship of the dynamically dissolute Neal Cassady (Garrett Hedlund as Dean Moriarty). Not only did the Brazilian filmmaker have the advantage of being able to bring an outsider's perspective to the rusty Beat canon, but his handling of Central Station and The Motorcycle Diaries had revealed his knack for harnessing topographic images to the emotional experiences of traveling companions. 

The last gasp of the Twilight franchise is really quite good, fugueing on the idea that if vampires live forever, wouldn’t it be great if a vampire fell in love with a human being - and didn’t drink her to death? As irresistible as that seems, there are times over its run when the Twilight franchise seemed to work against itself - what with huge idiotic CGI wolves that are neither scary nor realistic, etc.

This week a holy relic has gone on show in the British Library. The continuous scroll of the original manuscript of On the Road is a kind of ur-artefact of the Beat Generation. Typed up by Jack Kerouac in three weeks in April 1951, and 120 feet long, it underpins a central myth of the Beats: that a tight-knit counter-cultural post-war generation of young American writers were powered by nothing but inspiration (plus of course pills, nicotine and booze). They wrote the way jazzers performed - free-wheelingly, in the moment, without regard for the piffling orthodoxy of structure.

The cast of On the Road is an embarrassment of riches. There’s Viggo Mortensen, high on many people’s lists of favourite contemporary actors, with a rum portrayal of William Burroughs; talented British actors Sam Riley and Tom Sturridge as those other Beat colossi Kerouac and Ginsberg; Kirsten Dunst and Mad Men’s Elizabeth Moss, and indie stalwart Steve Buscemi.

As supremely silly as they are, the Twilight movies are made watchable by Kristen Stewart’s Bella Swan, whose combination of fidgetiness and aloofness puts me in mind of James Dean’s Cal Trask and Jim Stark. If not as virtuosic as Dean (she's as beautiful), Stewart has made Bella as potent an empathy-figure for today’s alienated teenage girls with Gothic fantasy lives as Dean made Cal and Jim for would-be rebellious youths in the Fifties.

A drop of menstrual blood spatters the ground in the opening shot of The Runaways, an insolent enough metaphor for the unstaunchable female energy that drives writer-director Floria Sigismondi’s bracing biopic of the pioneering all-girl teenage 1970s rock band until it heads up a narrative cul-de-sac. The blood is leaked by future lead singer Cherie Currie (Dakota Fanning), experiencing her first period while scampering to a club with her less innocent twin sister Marie (Riley Keough), who’ll soon be left in the slipstream of Cherie’s fame to become a drudge.

It's the eternal human-vampire-werewolf triangle, and at times it feels as though it really will go on for ever and ever. The story so far: in the small North-West Pacific town of Forks, where the sun hardly ever shines, a teenage girl called Bella loves Edward, a 100-year-old vampire who is perfect in every way, except of course that he drinks (non-human) blood, and has a tendency to sparkle on those rare occasions when the sun does come out. But, as we all know, girls like sparkly things, so that's OK.

They're back! Bella Swan and Edward Cullen (otherwise known as Kristen Stewart and Robert Pattinson) are once again smooching on a screen near you. I turned up one hour early for a showing of the new Twilight movie, and the damn thing was already sold out. Which suggests the film will do every bit as well as, if not better than, its predecessor, which made $383 million worldwide.