i can't shut down my macbook pro because the trackpad and keyboard not working.. what should i do?

Do you mean that they don't work mechanically? Or did the system freeze so that no input is accepted?

Have you tried attaching a USB mouse and keyboard?

Press the power button until the machine shuts off, then try to reboot and report what happens. Hopefully someone else will chime in, because I will be in Jury Duty Siberia all day...

JUst hit the power button again to restart.

It will make it easier to help you w/ your problem to know the exact model, size, year built, RAM installed and OS you're running.

Did you get it restarted? Does the keyboard work now? If not lay hands on an external.

I doubt that it is a mechanical problem with your keyboard and trackpad, but one way to find out is to keep a spare mouse around, so that you can try that if the system freezes again. If your system starts freezing regularly, it's time to start considering possibilities such as a failing hard drive. Is there an Apple Store anywhere near you? If this happens again, take it in for a checkup.

You could try running the Apple Hardware Test (Using Apple Hardware Test - Apple Support) though it is more likely that it was a software issue. What were you doing when the keyboard/track pad stopped working? What was on the screen (spinning beachball, regular cursor...)? In a jam, you can always force your MacBook to shut down by pressing and holding the power button until it powers down, and then rebooting.

This may be a one-time glitch. If it happens more frequently than almost never, contact Apple Support (Apple store, if you are near one, or on-line) and get there assistance. If your MacBook is new, you are still under Apple Care, even if you didn't pay for the extended coverage.

Still need to know the information I asked for.

"i was watching movie.. is that related when i operated my macbook for long time?"

Possibly that could be related to a heat problem.