Tricks to try: I generated the stars With Particle Illusion SE. The carribean house was found on the net, I masked the sky and windows and moved it to a transparency and rendered it as PNG (must do) in Photoshop. Stars to the background with the house two levels up in the foreground. Adjusted the sizes and couple the zooms for a pan effect. Between the house and the stars I put a grey bmp, minimized it to lay behind the windows (same with the video clip). Moved the house two places up the foreground to make room for the sillouettes from the video fx file. Put the sillouettes onto the bmp and, voila. people moving behind the windows, lights on lights off.
The "clothes toss" was done with multiple PNG transparencies and sequenced them in Particle Illusion. Gave the effect of people taking their clothes off in rapid fashion behind the window. Cool. Can't wait to try out iClone next!