Seth Rogen and James Franco in Pineapple ExpressPINEAPPLE 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.

Simon Pegg and Nick Frost in Hot FuzzHOT FUZZ

Not that many of you have seen them, but in between Rodriguez's and Tarantino's Grindhouse offerings, there are faux "coming attractions" for forthcoming trash flicks, one of which is directed by Edgar Wright. The trailer in question is for a slasher film called Don't, and in about 90 seconds of screen time, Wright - director/co-writer of the peerless zombie comedy Shaun of the Dead and the new action spoof Hot Fuzz - manages to lampoon (and celebrate) just about every cliché in the horror-preview bible: the insidiously throaty voice-over announcer; the shock edits, punctuated by screams; the sudden bursts of outré violence. It's a brilliant, savage parody, yet the trailer's ultimate joke is that it's legitimately effective; you find yourself actually wanting to see Don't. Wright tweaks genre previews and outdoes them in the same breath.

Rose McGowan in GrindhouseGRINDHOUSE

Within a few months, the Robert Rodriguez/Quentin Tarantino double-bill that composes Grindhouse - a three-hour paean to the joys of '70s schlock cinema - will have permanently ensconced itself on my DVD shelf, readily available for endless repeat viewing and analysis. But it's inconceivable that I'll ever again find the movie(s) as exhilarating as I did on my first viewing at the cineplex; not because the element of surprise will be missing, but because it's unlikely that any of my living-room screenings will find dozens of total strangers in attendance, and this movie demands to be seen with as large a crowd as possible. It will be thrilling to one day watch Grindhouse on DVD. It will also be almost completely pointless.

Simon Pegg and Nick Frost in Shaun of the DeadSHAUN OF THE DEAD, THE GRUDGE, and SAW

Halloween has come and gone, but three horror flicks are currently in theaters and - surprise! - two of them are actually good.