Oh please do - I've loved reading about these arms races since Richard Dawkins started talking about them in The Selfish Gene.
This summer I was moving a stone wall and I uncovered some spiders that were the most horrifying things I'd seen. But I looked them up and discovered that they subsist entirely on those roly-poly pill bugs that eat dead wood.
Imagine if we'd evolved to eat just one food. In a few thousand years our descendants might live exclusively on high-fructose corn syrup.