For the timelapse below we mounted our Go Pro HD Hero on an outside window and pointed it towards the sky. On a late summer London day you can see the planes shoot across the sky, the clouds form and the sun set.
The movie consists of 10,863 images captured one every 5 seconds (it is best viewed in 720p, fullscreen):
Music: Brent Freeman Blair, I Must Fly, over on MP3 Unsigned.
The Go Pro HD was secured using a suction cup to an outside window and powered throughout using a simple iphone charger, the complete sequence filled a 16gb card over 12 hours. The timelapse was constructed using After Effects CS5.