Harrison Ford plays the President of the United States and does a great job at it. I have watched this movie too many times to count. This is one of those movies that have you cheering for the President. It's about time someone made a movie where the President stands up for himself instead of someone always trying to save him. Gary Oldman does a fantastic job as the terrorist. He really makes you believe that his cause is the right cause. Some scenes did remind me of Die Hard, but if you liked Die Hard you will love this movie. My wife was watching the movie with me and kept digging her hand into my arm! She really gets into the movie more than I. Overall, the DVD sound and picture is excellent. This is definitely a buy not a rental!