@ Matt Rock:
That'd be funny, although slightly off-color for the younger generation.
GP11:
Nobody can write a movie for you on the spot. Movies require scripts to be written, edited, re-written, re-edited, filed, lost, found, and then re-edited again just for good measure. Not to mention coffee. You needs lots of coffee to stay awake and flesh out your idea.
Let's say you like to do spy movies...
This guy has lost the secret MICROFILM and needs to get it back from the BAD GUYS (can be up to a whole army of them, if you so desire). The BAD GUYS are located in a completely remote part of the world, so the good guy needs to rent helicopters and machine guns, not to mention woo about 10 ladies along the way. The ever-popular hero then receives news that the BAD GUYS have moved to another part of the world, and so on and so on until the end of the movie.
Bad plot I know, I just wrote that as an example. Also, it depends on your hardware and software on what exactly you can do in a movie.
Do you have a green screen? What about lights? Make-up? Money? You need a budget, even if it's low. If it's low, look into Indy Mogul and they'll show you how to create cool props for nearly no money at all. That's why I recommended them in the first place. Your movie is going to need props, no matter what the plot is.
We need to know what you can do with your camera and software before we can help you write a movie. And when we do help you write it, you better include us in the credits.

Merry Christmas and Happy New Year!