From water and salt to fake Atkins candy -- check out The Food Timeline, a fascinating look at what humans have eaten throughout the evolution from prehistoric hunting and gathering to, uh, post-modern hunting and gathering. There's also a companion Culinary History Timeline, on how and why (and how well...or not) we cook things to eat. Hours of delicious diversion!
All-Atkins UPDATE: try some of these meaty treats from The Onion. Mmmm, Pigs-Sans-A-Blanket.