Collection of Reference: Running

To get me started I thought I would start with 'running' reference as I thought it would be quite easy to find a variety different running styles and speeds, the first thing that pops into my mind when I think about running is the same as anyone else, Tom Cruise, so I looked for a clip of Tom cruise running montages on youtube and here is one that I found, the problem is that most of them are head on but they are still good:

http://www.youtube.com/watch?v=NJdMDvjfyQ0

And of course Usain Bolt, This would be an example of a highly perfected and efficient running style used my athletes, but might not work as a normal character running animation, still useful but perhaps I need some reference of regular people running too:

http://www.youtube.com/watch?v=MC_t8MfGHMQ

It's actually really hard to find videos of regular people running, so for now I just wanted to find one sample of an actual video game Running animation, I remember enjoying the animations in Dead Space a lot so I'm using Issac Clarkes running animation from the game:

http://www.youtube.com/watch?v=4DmsDICPnjg

EDIT

After finding the reference youtube channel I want to now add one of the running animations from there: