I've only listened to one or two episodes, but Filmspotting is good. A bit super-serious for my taste and very long, but still good.
"KCRW's Film Reviews" is good. It's Joe Morgenstern, who was one of the biggest champions of Magnolia. They're just short capsule review podcasts, but he's good.
I guess I prefer hearing about movies within pop culture podcasts, like Pop Culture Happy Hour (have I mentioned that podcast before?), Reasonable Discussions, Slate's Culture Gabfest, etc.