Web Sites: mental_floss.com
Why I am recommending mental_floss.com:
Because it's a fun and addictive way to acquire arbitrary bits of sometimes useful and always interesting information!
From the Web:
For the record: mental_floss magazine is an intelligent read, but not too intelligent. We're the sort of intelligent that you hang out with for a while, enjoy our company, laugh a little, smile a lot and then we part ways. Great times. And you only realize how much you learned from us after a little while. Like a couple days later when you're impressing your friends with all these intriguing facts and things you picked up from us, and they ask you how you know so much, and you think back on that great afternoon you spent with us and you smile.
And then you lie and say you read a lot.