In regards to training, I often say that it's all been done; there is nothing new. It just seems like everything is recycled and things come in and out of vogue.
Another favorite saying of mine is that, the best coaches/athletes always figure things out first, then science later confirms and explains what they intuitively did. The example I always give for this is Carl Lewis' lack of stretching.
The following video provides a good example of both of these ideas. It's an interview with famed coach Percy Cerutty, whose most notable protege was the undefeated miler Herb Elliott. In the video you'll notice a couple of different things. First, there's some core work and some pretty heavy weight lifting. Lastly, check out the running up and down the sand dunes. If that doesn't work on strength endurance, I don't know what does. Plus, it looks so natural (I wish there was video of his athletes carrying spears up the hill too...some ideas don't work/catch on).
Lastly, here's a video of Said Aouita with some good slow motion video. Take a look at the video at about 55sec. You can clearly see Said landing in slow motion and it is right on. No heel striking, pretty much a midfoot strike with the heel coming down after, strikes right underneath him. Anyways, take a look at that, it's how you should run.