Here's a compilation of other interview prep material online.
The links here have been hand picked for quality - they've all got excellent information.

Reviews of Tech Companies by Employees

www.fuelforhire.com
www.glassdoor.com

Phone Screen
http://steve.yegge.googlepages.com/five-essential-phone-screen-questions

Interviewer's Perspective
http://www.joelonsoftware.com/articles/GuerrillaInterviewing3.html

Interviewee's Perspective
http://www.mytechnicalinterviewexperience.com

Math / Logic Puzzles
http://www.techinterview.org

General Knowledge
http://www.acetheinterview.com
http://www.techinterviews.com
http://www.technicalinterview.info

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