Association for Computer Machinery (ACM): I highly recommend student membership for every CS student.
Institute of Electrical and Electronics Engineers (IEEE): Ditto.
ACM Career Resources. ACM is an excellent source of CS career information. Resources include:—Online Resources for Graduating Students, which has a useful list of links to career Websites.
—ACM Career and Job Center: place for job seekers and employers in the computing industry to connect with each other.
—Computer Careers Website: Guidance and resources for preparing for a career in computer science.
IEEE Resume Lab: Online service that allows IEEE members to develop a resume or CV using specialized tools tailored for each step of the job seeking process. Excellent resource.
IEEE Computer Society Build Your Career: Another excellent source of career information.
IEEE Job Site: Yet another excellent source of career information, plus specific job leads.
Dice: Frequently rated the best job site for positions worldwide in the information technology industry.
MindSumo: This company hosts computer science projects for students to complete to show their capabilities to recruiters. An interesting alternative approach to linking up with a potential employer. 
Where the Jobs Are: The US government forecasts a 22.2 percent increase in computer and mathematical jobs by 2018. Moreover, computer science occupations are projected to account for nearly 60 percent of all job growth among all fields of science and engineering over the next eight years. This report makes for interesting reading.
Letters of Recommendaton: Sound advice on soliciting a letter of recommendation.
Want a job? Get a computer science degree: Interesting article from Network World.
Computing Research Association Taulbee Survey: The Taulbee Survey is the principal source of information on the enrollment, production, and employment of Ph.D.s in computer science and computer engineering (CS & CE) and in providing salary and demographic data for faculty in CS & CE in North America.
Computer Science Career Guide: Job descriptions, which includes daily actiivity, skill requirements, salary, training required.
Computer Jobs: Lists thousands of searchable job opportunities categorized by major metropolitan markets and skill sets.
ComputerWorld IT Topic Center: Wide range of material, including news, white papers, career center, in-depth reports, etc.
Why a PhD in Computer Science?: Slides by Prof. John Stankovic of U. of Virginia. Salary figures from 2003.
Computer Science: Student Myths and Misconceptions: From the Consortium for Computing Sciences in Colleges. Well worth reading.
Online PhD Guide. Director of online PhD programs, plus useful information and perspectives on researching, time management, dissertations and more.
A Discussion of Textbook Costs: From the Text and Academic Authors Association.
Home Page of William Stallings