iMac doesn’t want me to watch Windows 7 Tour

It seems like my iMac is possessed with something evil. It happened  when I view Windows 7 Tour Video. My screen freeze for a while and then it flickered. If you look at the movie you’ll notice the the movie is inverted upside down, left to right. It really looks wierd and hard to watch. So i took a video and upload it on youtube.

When I finished watching the video my Mac freeze every two to five minutes. But get’s back to normal when I restart. It only happens when I watch that Windows tour.

I’m  positive that there’s something wrong in this iMac, probably video hardware, or something to do with video codecs since I can watch other movies on my Mac and on youtube. What do you think?

UPDATE: Forum people said I should update Flip4Mac, still same thing, I hate restarting may Mac.