We talk about this extensively, but here are some tips:
1. Convert to 24p with software (www.dvfilm.com/maker) or use a workflow (50i to 24p).
2. Shoot like a film: contrasted lighting (you'll notice TV-style shooting is more evenly lit), shallow depth of field (open the iris all the way up and pull the camera back, then zoom all the way in to the end of the lens to get that effect), and, I'd argue, use camera shots and movements that are similar to those in movies. That could be anything, of course, but you'll see more slow- to moderate-speed push-ins from a medium to a close-up on an actor at the right time (like reacting to something interesting that was said, or maybe a revelation; or even something the actor is saying), even if they're brief, in a movie than on TV.