To view an iMovie on television from a tape, the first step is to export the movie to your camcorder. Then you can either connect your camcorder to your television, or make a VHS tape from your digital tape (Mini-DV or Digital-8).
When you've finished your iMovie and are ready to take it to the next level, exporting to a camcorder will allow you to display it on the television. With a few simple steps, you can make the video ready to share in a one-time event, where you play the video only from the camera. Or, after you have exported the video from iMovie to your camcorder, you can then go on to make a tape from there.