I have an '07 Altima (love that car), anyway, I use the AUX jack and my BB, also the sound of the movies is awesome but for real video effect, I just plug in my laptop and voila! I have the largest screen available for any mobile video playing!
Now the get real fancy and save my battery life on the laptop, I just use a DC converter and plug in the laptop to the DC jack in my car (the Altima doesn't come with a cigarette lighter, it's a DC jack). I can use my laptop until my car battery goes out if necessary!