I've been having a bunch of fun shooting these lately. Holding the camera in front of me I simply click off pictures at variable speeds as I cruise along. For walking sections I've been taking a frame every 4 or so steps, but when I wanted to really capture some movement or action the 7D's 8 frame/second motor drive is awesome. I then import all the stills into Final Cut so each picture = one frame and play it back at 24 frames/sec. A little frame blending helps it all flow together. (It also helps your work-flow to take the pictures at 'small' resolution on the camera. You'll see much less spinning ball of death, and there's really no point in taking 3000 18megapixel stills are 40mb each when you're going to play them back at 720p.)
Las Vegas: For this one I walked from one end of Caesars Palace to the pool at the Bellagio without stopping. Somewhere around 2800 individual pictures.
Magnolia the Explorer: This was also made with around 2800 pictures that I shot on a recent dog walk.