Here is my list of technical questions; the second paragraph explains why I’m willing to post them publically. I also have that same list of questions formatted differently, with space for me to write in a candidate’s answers.
The notes from my tutorial “How to Interview a System Administrator” are not publically available. I am available to come teach this course at your organization; if you’re interested in having me do this, please contact me. You can also contact me about the materials as I may be willing to make them available on a case-by-case basis.
Steve Yegge has a good blog posting on phone screenings and interview questions. Here’s a cached copy just in case there’s a problem with Steve’s site.