Besides featuring the basso profundo ambitions of Tay Zonday, emotional pro-Britney video rants, and amateur p.o.v. blowjobs, the Internet can also be a great tool for LEARNING. Seriously! One of my favorite ways to utilize this virtual education machine is to download or stream lectures on any number of interesting topics. The Commonwealth Club of California is a great public and cultural affairs forum that regularly features talks and interviews with all kinds of speakers on a variety of subjects. The Club's website, which contains a sizable audio archive of various lectures, is a great free resource for those who want to kill an hour or so by learning something new. Check it out here.
I'll post more lecture links in the future, and would appreciate any suggestions that you might have.