Favourite shots are side- on in my opinion.
These 2 show the power and technique required to be the best.
http://41.media.tumblr.com/9bc53f033ac23e671e89d1cad51b4110/tumblr_merc4uod5b1rn92z6o1_1280.jpg
https://s-media-cache-ak0.pinimg.com/736x/a4/bf/44/a4bf442115c4b1f7e5d5a9d0c64cfe31.jpg
http://i.telegraph.co.uk/multimedia/archive/02129/edwin-moses-getty_2129850b.jpg