American History

http://www.pbs.org/wgbh/pages/amex/index.html

Biographies

http://www.s9.com/biography/

British History

http://www.spartacus.schoolnet.co.uk/FWWtitle.html

Computer Science & Such

http://plato.stanford.edu/entries/church-turing/ — The Church-Turing Thesis Explained
http://www.turing.org.uk/turing/ — Bitchen Alan Turing Page
http://www.cs.uregina.ca/~bayko/cpu.html — Great Microprocessors of the Past and Present
http://www.tuxedo.org/~esr/jargon/jargon.html — The Jargon File (*very* large)
http://slashdot.org/ — News for Nerds

Islam

http://islam.org

Literature

http://www.bartleby.com/cambridge/
http://www.sparknotes.com

Lyrics Server

http://ntl.matrix.com.br/pfilho/summer.html

Mathematics

http://www.math.niu.edu/~rusin/known-math/

Music

http://www.allmusic.com — The All-Music Guide

Nobel Prize Winners in Physics

http://www.slac.stanford.edu/library/nobel.html

Online Texts

http://www.ipl.org
http://www.bibliomania.com
http://www.gutenberg.net/

Particle Physics

http://pdg.lbl.gov/cpep/adventure.html— The Standard Model

Physical Laws and Constants

http://www.alcyone.com/max/physics/laws/

Question Archive

http://www.stanford.edu/group/CollegeBowl/archive.html

Social Sciences

http://www.researchresources.net/