- You know what to do.
Of course, if you don't know what to do... here's a clue: fire open your video editor of choice and use the chroma key / green screen feature. My recommendation is to rush out and purchase iMovie '09, as it's the easiest to use (drag & drop). If you don't know how to do that, now's the time to learn!
If you want to be seen and considered, you MUST submit your creation as a video response to this video.
Best videos that don't infringe copyright in any way will get featured and promoted in my channel and on Twitter:
Be creative! Have fun! Do something unique!