I applied through college or university. The process took 1 day. I interviewed at AT&T (Chicago, IL) in Jan 2009
Interview
Very friendly and the entire interview was by a group (so no one on one). Each member of the team had questions prepared for me. They asked about my experiences but I distinctly remember being asked about something I did a long time ago that wasn't even on my resume. Apparently they looked me up and found somewhere that I had published a poster and asked me detailed questions about the research.
Interview questions [1]
Question 1
Tell me about <insert project you did a long time ago that you didn't think anyone knew about>.