I recently did a survey of several museums that have their collections online.  Here are a few I liked:

Fine Arts Museums of SF
http://www.thinker.org

The Met
http://www.metmuseum.org/

LACMA
http://www.lacma.org/

MFA Boston
http://www.mfa.org/home.htm

Hope that helps...

Naina Mistry
Freer/Sackler Galleries
Smithsonian Institution

========================================================Important Subscriber Information:

The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes).

If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes).