Super Slow-Motion: Elite Marathoners Running Form

I recently came across this great slow-motion footage, shot in the final 800m of the 2011 Boston Marathon. These videos provide a great opportunity to take a look at the running form of some of the world's top distance runners.
Geoffrey Mutai (KEN) & Moses Mosop (KEN)
These two Kenyan athletes finished 1st (2:03:02)and 2nd (2:03:06) respectively. Mutai is in Green...
Caroline Kilel (KEN), Sharon Cherop (KEN) & Desiree Davila (USA)
Kilel, closest to camera, went on to win the Women's race (2:22:36). With Cherop finishing 3rd (2:22:42), and Davila 2nd (2:22:38).
Ryan Hall (USA) & Gebre Gebremariam (ETH)
Finishing 4th (2:04:53) and 3rd (2:04:38) respectively in the Men's race, it's interesting to note the differences between the two running styles.
Kara Goucher (USA)
Finishing 5th (2:24:52), while Goucher is by no means an example of particularly poor form (obviously a world-class athlete), it's noticable that she is somewhat more sat-back in her running technique, in comparison to her East African counterparts.