Central Park Sketching & Art Meetup Group: This is the art group I organize in NYC. If you're interested in art, join us!
The Metropolitan Museum of Art: You can sign up for art trivia of the day, shop, and tour the galleries. Very nice site.
Artchive: Learn about artists and find their works online, plus new art theory and criticism.
WetCanvas.com: Really comprehensive, professional site with tons of info and articles.
John Lovett: This guy has set up spectacular online tutorials, mostly for watercolor.
Peter Callesen: Amazing cut paper sculptures.
Unique Gifts - Unique Australian Aboriginal Art. Buy hand carved and painted Didgeridoos, Boomerangs, Aboriginal Art paintings and lots of other unique gifts. Designs by Australian Aboriginal Stan Yarramunua from the Yorta Yorta tribe. Orders shipped worldwide.
Art Resources.com: Every art resource
you could ever need on the Internet.
SketchCrawl - On Enrico Casarosa's web site. Lots of sketches and comic work you can buy, but my favorite pages are his sketchcrawls - books of sketches done in a single day.
Art Gallery Worldwide: Artwork in different styles and media. Website offers a wide variety of features and services that enable customers and artists to buy and sell art.
www.michelangelo.com/buonarroti.html: Nicely done site on Michelangelo, some sculptor guy or something.
Allan Norico: A friend of my wie's whom I met recently, who does great work in animation and design. His portfolio is excellent and his site also has works in progress.
www.jeffgusky.com: The photography site of an old friend of my family's. Very beautiful and haunting work.
www.ibiblio.org/wm/paint/: WebMuseum, Paris. Nice site to browse through.
www.louvre.fr/: Official site of the Louvre. I just went there, and I highly recommend touring this site if you can't go in person, or even checking it out before you go to get a good overview. Their virtual tours are the best use of Quicktime VR I've seen on the web.