I'll also second BillV in saying not safe. I'm sure a lot of the ISPs monitor their traffic. A buddy of mine (about a year ago) downloaded a cracked version of Microsoft Office 2007 through a torrent & his ISP contacted his father containing what he downloaded, the exact time, etc. Maybe they're not too worried about movies because you can find movies just about anywhere. I think torrenting a movie is a waste of time though, there's plenty of site's that offer live stream - Just my opinion on this one.
eCPPT (Silver/Gold), eWPT, GSEC, GISP, GCIH, OSCP, OSWP