Playing movies in Microsoft Paint!!

Step 1 : Start playing a movie using Windows Media Player
Step 2 : Hit Print Screen key
Step 3: Open Microsoft Paint (let the movie continue to play in media player)
Step 4: Hit Ctrl + V or select paste from the edit menu

Voila! The movie is played inside Microsoft Paint.

The reason is that windows replaces a specific color with the video wherever it is on the screen.

http://img120.imageshack.us/img120/1407/movieviewerxs8.png
Just open it in any picture viewer while playing a video.

(Courtesy Prethi Kulkarni & Jag)