Entertainmentcareers.net
http://www.entertainmentcareers.net/
Robust offering of resources for anybody interested in working in film or television.

Casting-call US
http://www.casting-call.us/
Get your start in the entertainment business through the Internet by finding a role as an extra.

Crewnet:
http://crew-net.com/
Since 1994 Crew Net has been providing Entertainment Industry Professionals with up to the minute job leads for Feature Films, Television, Commercial and Stage Productions.

Art Deadlines List
http://rtuh.com/adl
monthly newsletter (email & paper versions) providing exhibitions/competitions, jobs, internships, call for entries/proposals/papers, writing contests, scholarships, residencies, design & architecture competitions, auditions, fellowships, casting calls, tryouts, grants, festivals, funding, financial aid, and other opportunities (including some that take place on the web) for artists, art educators and art students of all ages.

The Film, TV and Commercial Employment Network
http://www.employnow.com/
Information and resources for individuals interested in pursuing a career in the entertainment industry. Includes casting calls and job hotlines.

Film Jobs and Employment in New England
http://www.newenglandfilm.com/jobs.htm
A searchable guide to film jobs in the New England area

Industrial Light and Magic Job Opportunities
http://www.ilm-jobs.com/
Info on internships at George Lucas's Industrial Light and Magic studios

Film School Confidential: The Insider's Guide to Film Schools 
http://www.Lather.com/fsc/
This site is a great guide to film schools in the U.S., and you can locate a multitude of links here.