Well, it also depends on what format you used to record the movies in.  You either used AVCHD or MP4.  If you used MP4 then you should just be able to either connect your camera to your Mac via USB (or put the card in to a card reader) and then go in to the correct folder and just drag them on to your hard drive.

If you recorded using AVCHD however, then firstly you need to be on an Intel Mac.  And you need to use an application to transfer it.  I use Final Cut Pro.  iMovie should work too.