Aside from "how do I get a light sabre effect", this is probably the most asked question in videomaking.
The short answer is if you want a movie to look like it's shot on film - shoot it on film.
The slightly longer answer (and this is not from experience only from what I've read) is shoot it as if you were shooting on film. Lighting is crucial. You need to be able to get the shallow depth of field associated with 35mm/70mm cameras (not achievable on cheaper cameras). You can do a little in post with colour correction and other effects. Video camera manufacturers will make a big deal ouyt of being able to shoot "24fps progressive for that movie look" (cine cameras shoot 24 frames per second and are by their nature "progressive" rather than the interlaced of SD or some HD video) but this is only a small part of the jigsaw.
Google "making video look like movie/film" and you'll find thousands of pages.
Good luck

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Tim