Monster.com

Not only can you search for jobs here, but there is also career information at this website.

USA Jobs

This is the official job site of the United States Federal Government.  Internships as well as more permanent positions can be searched by location, agency, salary and job title.

Michigan Jobs and Careers

"Search for jobs, start a business, find financial aid for school and job training resources. Learn about careers and new occupations. Connect to resources for employers, teachers, students, & parents."  [from the site]

Occupational Outlook Handbook

A nationally recognized source of career information, specific careers can be searched as well as browsed. Details on what a person in that job does each day and an approximation of wages is available.  A popular feature is the predition of "Tomorrows Jobs", those areas that may face a shortage of applicants in the future.  The Handbook is revised every two years.