If you need help killing time on the internet

The fact that you can find free content on the internet is no surprise to anyone, but I thought it might be useful to start a list of things you can find for free on the internet. Things you can find for free, legally. While I'm writing in very broad, basic strokes, I hope this list will spark some ideas for the bored and the budgeting. Please comment and add your favorite resources!

1. TV. Let's start with the obvious, shall we? There's little need for a Tivo because most channels that you can name have weeks, if not entire seasons, of their most popular shows online. Also, just about every trivia question you can think of about your favorite shows is answered online (the Internet Movie Database is frequently a good place to start).
2. Most publications. Not only individual publications are available on line, but news aggregators (the The Huffington Post and Google News) collect news stories from multiple publications. Unfortunately, short story publications remain almost entirely subscription-based. There is no good, short fiction on the web.
3. Books past their copyright date. Books that have passed the copyright date are public domain in the US and many other countries. Project Gutenberg is a site that contains over 28,000 books from English-language classics like Alice's Adventures in Wonderland to esoteric, translated works like the Dao de Jing. Project Gutenberg contains most books in several formats from basic HTML to volunteer-read Librivox audio versions. Of course, you might also just take a trip to your local library.
4. Contact information of old friends. Beyond social networking sites and free calling software (like Skype), you might try to a simple search to find a friend you haven't been in contact with for years and catch up. I used a Google search to get the email address of a high school friend that didn't have a Facebook profile.
5. Thousands of Flash games. Thousands of any kind of games, actually. From Boggle and adaptations of your favorite boardgames to Flash strategy games to huge, multi-player role playing games, to nostalgic remakes of 90s videogames, if there's any game you enjoy on the computer, there's probably a version of it on the web for free.
6. The answer to every question you wanted to know as a kid. You can visit WikiHow to figure out how to do almost anything (How to make your hair grow faster. How to cook on a car engine. How to kiss). Tell Me Why? is a great site, if you excuse the grammar occasionally, for browsing common childhood questions and more. Especially space questions ("Why is the sky blue in the day and black at night?" and "How do astronauts communicate in space?").