Drama
Monologue Archive
Theatre on a Shoestring - Monologue Sites
Simply Scripts

Film
Filmsite
History of Film Links
SnagFilms - watch free documentaries online!

Shakespeare
Absolute Shakespeare
Folger Shakespeare Library
Shakespeare Resource Center
Internet Shakespeare
Open Source Shakespeare
Encyclopedia Britannica's Guide to Shakespeare 
Internet Shakespeare Editions - Sites on Shakespeare and the Renaissance
The Oxford Shakespeare
Mr. William Shakespeare and the Internet
Guide to Online Schools - Everything Shakespeare

General
Bartleby.com: Great Books Online (poetry, quotations, encyclopedias, dictionaries, thesauri)
Free Rice - Test your vocabulary & grammar and help end world hunger at the same time!
VocabGrabber: Visual Thesaurus
Lexipedia - find definitions, synonyms, antonyms
Visuwords - graphical dictionary & thesaurus
Wordia - high-quality online dictionary with video!

Chicago Studies
Chicago Neighborhood and City Guide
Maine Township Chicago Studies Pathfinder
Encyclopedia of Chicago
Chicago Timeline
WTTW: Explore the Loop

Classical Mythology
Bulfinch's Encyclopedia of Mythology 
Encyclopedia Mythica
Theoi Greek Mythology

Poetry
Poetry 180: A Poem a Day
Poetry Archive
Poetry Daily, a new poem every day
Bartleby.com: Great Books Online (poetry, quotations, encyclopedias, dictionaries, thesauri)
Poetry Foundation
Representative Poetry Online
Norton Poets
Sonnet Central
ImageChef - Create Visual Poetry and Poetry Blender
BBC Wordplay
Federeal Resources for Education Excellence - Poetry Links
Modern American Poetry
Poets.org
Magnetic Poetry - play with magnetic poetry online!
Rhyme Zone - find rhymes, synonyms, defintions