http://www.howstuffworks.com/ I just stumbled upon this site today and I have to say it's pretty amazing! It tells you about how all kinds of stuff work; everything from computers and the Internet to science to money to people and beyond. It even talks about how some science fiction stuff (like time travel) will work, if it even works at all. I'd say we could probably develop some pretty interesting discussions on this stuff, right in this here say *cough* forum *cough*. Check it out!