This is a must own film for any action fan.  Great tension throughout.  Although some scenes are pretty unrealistic, it makes up for it in terms of pure entertainment and action.  This is one of the few movies I have watched more than once, let alone twice.  I probably watch it at lest once a year.  The only negative I would say is that extras are severely lacking on the Bluray.  But it is still ABSOLUTELY worth owning, you will not regret it!