While camping at the Watchman Campground, I spent each morning taking a series of still images with my Nikon D300 and D5100 and set the timer on the camera to make a photo every 10 seconds or so. Later, at home, I uploaded the images to iMovie, set the time each image would last for .2 seconds, added music and here you see the results.
Here's a link to an article from petapixel.com about 5 people doing Time-Lapse Photography I'm impressed by the photos, the use of the "rail" and the subjects too.
And check out this recent National Geographic interview and Time Lapse by Michael Shainblum.
What do you think?